Red Hat セキュリティアドバイザリ 2011:1386 から：

複数のセキュリティの問題といくつかのバグを修正し、 1 つの拡張機能を追加する更新済みカーネルパッケージが、 Red Hat Enterprise Linux 5 で現在利用可能です。

Red Hat セキュリティレスポンスチームは、この更新には重大なセキュリティ上の影響があると評価しています。詳細な重要度の評価を提供する Common Vulnerability Scoring System （CVSS）のベーススコアが、「参照」セクションの CVE リンクの各脆弱性に対して利用可能です。

カーネルパッケージには Linux オペレーティングシステムのコアである Linux カーネルが含まれています。

セキュリティ修正：

* ext4 ファイルシステムの最大ファイルオフセット処理により、ローカルで権限のないユーザーがサービス拒否を引き起こす可能性があります。（CVE-2011-2695、重要度高）

* IPv6 フラグメント識別値の生成を利用することで、リモートの攻撃者がターゲットシステムのネットワークを中断させて、正当なユーザーによるサービスへのアクセスが妨害されるおそれがあります。（CVE-2011-2699、重要度高）

* 悪意ある CIFS（Common Internet File System）サーバーがディレクトリ読み込みリクエストで特別に細工された応答を送信し、結果として CIFS シェアをマウントしているシステムでサービス拒否または権限昇格を引き起こす可能性があります。（CVE-2011-3191、重要度高）

* ローカルの攻撃者が、mount.ecryptfs_private を使用して、通常はアクセスできないディレクトリをマウントしてからアクセスする可能性があります。注：この問題を修正するには、RHSA-2011:1241 ecryptfs-utils 更新もインストールする必要があります。（CVE-2011-1833、重要度中）

* taskstats サブシステムにある欠陥により、権限のないローカルユーザーが過剰な CPU 時間とメモリを使用させる可能性があります。（CVE-2011-2484、重要度中）

* マッピング拡張の処理により、権限のないローカルユーザーがサービス拒否を引き起こす可能性があります。（CVE-2011-2496、重要度中）

* GRO（Generic Receive Offload）のフィールドが、一貫性のない状態のまま放置される可能性があります。ローカルネットワークの攻撃者が、この欠陥を利用し、サービス拒否を引き起こす可能性があります。デフォルトで、GRO はサポートされる全ネットワークドライバーで有効化されています。（CVE-2011-2723、重要度中）

* RHSA-2011:1065 によってイーサネットブリッジ実装に回帰が導入されました。システムのブリッジにインターフェイスがある場合、ローカルネットワークの攻撃者がそのインターフェイスにパケットを送信し、そのシステムでサービス拒否を引き起こす可能性があります。Xen ハイパーバイザーと KVM（Kernel-based Virtual Machine）のホストでは、ブリッジインターフェイスがしばしば導入されます。（CVE-2011-2942、重要度中）

* Xen ハイパーバイザーの IOMMU エラー処理実装の欠陥により、PCI デバイスの直接コントロールがあるゲストのオペレーティングシステム内で、特権ゲストユーザーがホストでパフォーマンスの低下を引き起こし、ハングアップさせる可能性があります。（CVE-2011-3131、重要度中）

* IPv4 と IPv6 のプロトコルシーケンス番号とフラグメント ID の作成により、中間者攻撃者がパケットを注入し、接続をハイジャックする可能性があります。プロトコルシーケンス番号とフラグメント ID が、よりランダムになりました。（CVE-2011-3188、重要度中）

* カーネルのクロック実装の欠陥により、権限のないローカルユーザーが、サービス拒否を引き起こす可能性があります。（CVE-2011-3209、重要度中）

* 無差別モードのインターフェイスの非メンバー VLAN （仮想 LAN）パケット処理、ならびに be2net ドライバーの使用により、ローカルネットワークの攻撃者がサービス拒否を引き起こす可能性があります。
（CVE-2011-3347、重要度中）

* Auerswald の USB ドライバーにある欠陥により、権限のないローカルユーザーが、特別に細工された USB デバイスを挿入することにより、サービス拒否または権限昇格を引き起こす可能性があります。（CVE-2009-4067、重要度低）

* Trusted Platform Module（TPM）の実装での欠陥により、権限のないローカルユーザーがユーザー空間に情報を漏洩する可能性があります。
（CVE-2011-1160、重要度低）

* マウントが別のローカルユーザーにより既にマウントされている場合、権限のないローカルユーザーが、正確なパスワードを知らないまま認証の必要な CIFS シェアをマウントできる可能性があります。（CVE-2011-1585、重要度低）

Red Hat は、CVE-2011-2699 を報告してくれた Fernando Gont、
CVE-2011-3191 を報告してくれた Darren Lavender、CVE-2011-1833 を報告してくれた Ubuntu セキュリティチーム、CVE-2011-2484 を報告してくれた Openwall の Vasiliy Kulikov、CVE-2011-2496 を報告してくれた Robert Swiecki、CVE-2011-2723 を報告してくれた Brent Meshier、CVE-2011-3188 を報告してくれた Dan Kaminsky、CVE-2011-3209 を報告してくれた Yasuaki Ishimatsu 氏、CVE-2011-3347 を報告してくれた Somnath Kotur、CVE-2009-4067 を報告してくれた Rafael Dominguez Vega、CVE-2011-1160 を報告してくれた Peter Huewe に感謝の意を表します。Ubuntu セキュリティチームは、Openwall の Vasiliy Kulikov 氏および Dan Rosenberg 氏を、 CVE-2011-1833 の最初の報告者として承認しています。

Rebase to upstream 3.1.1 kernel Fix boot regression on 64-bit EFI machines Update to the Linux 3.0.8 (2.6.40.8) stable release. Fix assorted security bugs. Bugfix update Update to the latest 3.0.7 stable kernel release which includes a variety of fixes.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Somnath Kotur discovered an error in the Linux kernel's VLAN (virtual lan) and be2net drivers. An attacker on the local network could exploit this flaw to cause a denial of service.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-1530 advisory.

    - [kernel] KEYS: Fix a NULL pointer deref in the user-defined key type (David Howells) [751190]     {CVE-2011-4110}
    - [netdrv] benet: remove bogus 'unlikely' on vlan check (Ivan Vecera) [736429] {CVE-2011-3347}
    - [netdrv] be2net: non-member vlan pkts not received in promiscous mode (Ivan Vecera) [736429]     {CVE-2011-3347}
    - [netdrv] be2net: fix crash receiving non-member VLAN packets (Ivan Vecera) [736429] {CVE-2011-3347}
    - [fs] GFS2: rewrite fallocate code to write blocks directly (Benjamin Marzinski) [750208] {CVE-2011-4098}
    - [net] vlan: fix panic when handling priority tagged frames (Andy Gospodarek) [714936] {CVE-2011-3593}
    - [mm] oom: fix integer overflow of points in oom_badness (Frantisek Hrbata) [741207] {CVE-2011-4097}
    - [fs] ext4: fix BUG_ON() in ext4_ext_insert_extent() (Lukas Czerner) [742091] {CVE-2011-3638}
    - [fs] proc: fix oops on invalid /proc/pid/maps access (Johannes Weiner) [746613] {CVE-2011-3637}
    - [kernel] fix taskstats io infoleak (Jerome Marchand) [716848] {CVE-2011-2494}
    - [net] bridge: fix use after free in __br_deliver() (Amerigo Wang) [730756] {CVE-2011-2942}
    - [fs] cifs: add fallback in is_path_accessible for old servers (Jeff Layton) [692709] {CVE-2011-3363}
    - [tpm] Zero buffer after copying to userspace (Jiri Benc) [732633] {CVE-2011-1161 CVE-2011-1162}
    - [fs] make sessionid permissions in /proc/*/task/* match those in /proc/* (Johannes Weiner) [692039]     {CVE-2011-1020}
    - [netdrv] b43: allocate receive buffers big enough for max frame len + offset (RuiRui Yang) [738205]     {CVE-2011-3359}
    - [fs] fuse: check size of FUSE_NOTIFY_INVAL_ENTRY message (RuiRui Yang) [736765] {CVE-2011-3353}
    - [fs] cifs: fix possible memory corruption in CIFSFindNext (Jeff Layton) [730354] {CVE-2011-3191}
    - [kernel] perf tools: do not look at ./config for configuration (Jiri Benc) [730204] {CVE-2011-2905}
    - [fs] corrupted GUID partition tables can cause kernel oops (Jerome Marchand) [695982] {CVE-2011-1577}
    - [x86] perf: Fix Intel fixed counters base initialization (Don Zickus) [736284] {CVE-2011-2521}
    - [net] Compute protocol sequence numbers and fragment IDs using MD5. (Jiri Pirko) [732665]     {CVE-2011-3188}
    - [crypto] Move md5_transform to lib/md5.c (Jiri Pirko) [732665] {CVE-2011-3188}
    - [net] ipv6: make fragment identifications less predictable (Jiri Pirko) [723433] {CVE-2011-2699}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Paolo Bonzini discovered a flaw in Linux's handling of the SG_IO ioctl command. A local user, or user in a VM could exploit this flaw to bypass restrictions and gain read/write access to all data on the affected block device. (CVE-2011-4127)

A flaw was found in the Linux kernel's ext4 file system when mounting a corrupt filesystem. A user-assisted remote attacker could exploit this flaw to cause a denial of service. (CVE-2012-2100).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An updated rhev-hypervisor package that fixes several security issues is now available.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The rhev-hypervisor package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent.

Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions.

The RHBA-2011:1254 update introduced a regression in the Linux kernel's Ethernet bridge implementation. If a system had an interface in a bridge, and an attacker on the local network could send packets to that interface, they could cause a denial of service on that system. (CVE-2011-2942)

A flaw in the Linux kernel could lead to GRO (Generic Receive Offload) fields being left in an inconsistent state. An attacker on the local network could use this flaw to trigger a denial of service. GRO is enabled by default in all network drivers that support it.
(CVE-2011-2723)

The way IPv4 and IPv6 protocol sequence numbers and fragment IDs were generated could allow a man-in-the-middle attacker to inject packets and possibly hijack connections. Protocol sequence numbers and fragment IDs are now more random. (CVE-2011-3188)

Non-member VLAN (virtual LAN) packet handling for interfaces in promiscuous mode and also using the be2net driver could allow an attacker on the local network to cause a denial of service.
(CVE-2011-3347)

Red Hat would like to thank Brent Meshier for reporting CVE-2011-2723;
Dan Kaminsky for reporting CVE-2011-3188; and Somnath Kotur for reporting CVE-2011-3347.

This updated package provides updated components that include fixes for numerous security issues. These issues have no security impact on Red Hat Enterprise Virtualization Hypervisor itself, however.

The security fixes included in this update address the following CVE numbers :

CVE-2011-2695, CVE-2011-2699, CVE-2011-3191, CVE-2011-1833, CVE-2011-2496, CVE-2011-3209, CVE-2011-2484, CVE-2011-3131, CVE-2009-4067, CVE-2011-1160, and CVE-2011-1585 (kernel issues)

CVE-2011-3378 (rpm issues)

Users of Red Hat Enterprise Virtualization Hypervisor should upgrade to this updated package, which resolves these issues.

The remote MiracleLinux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2011-362:08 advisory.

    The kernel package contains the Linux kernel (vmlinuz), the core of any Linux operating system.  The     kernel handles the basic functions of the operating system: memory allocation, process allocation, device     input and output, etc.
    Security issues fixed with this release:
    CVE-2009-4067     CVE-2011-1160     CVE-2011-1585     CVE-2011-1833     No information available at the time of writing, please refer to the CVE links below.
    CVE-2011-2484     The add_del_listener function in kernel/taskstats.c in the Linux kernel 2.6.39.1 and earlier does not     prevent multiple registrations of exit handlers, which allows local users to cause a denial of service     (memory and CPU consumption), and bypass the OOM Killer, via a crafted application.
    CVE-2011-2496     No information available at the time of writing, please refer to the CVE links below.
    CVE-2011-2695     Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to     cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a     write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.
    CVE-2011-2699     No information available at the time of writing, please refer to the CVE links below.
    CVE-2011-2723     The skb_gro_header_slow function in include/linux/netdevice.h in the Linux kernel before 2.6.39.4, when     Generic Receive Offload (GRO) is enabled, resets certain fields in incorrect situations, which allows     remote attackers to cause a denial of service (system crash) via crafted network traffic.
    CVE-2011-2942     CVE-2011-3131     CVE-2011-3188     CVE-2011-3191     CVE-2011-3209     CVE-2011-3347     No information available at the time of writing, please refer to the CVE links below.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2011:1386 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux     operating system.

    Security fixes:

    * The maximum file offset handling for ext4 file systems could allow a     local, unprivileged user to cause a denial of service. (CVE-2011-2695,     Important)

    * IPv6 fragment identification value generation could allow a remote     attacker to disrupt a target system's networking, preventing legitimate     users from accessing its services. (CVE-2011-2699, Important)

    * A malicious CIFS (Common Internet File System) server could send a     specially-crafted response to a directory read request that would result in     a denial of service or privilege escalation on a system that has a CIFS     share mounted. (CVE-2011-3191, Important)

    * A local attacker could use mount.ecryptfs_private to mount (and then     access) a directory they would otherwise not have access to. Note: To     correct this issue, the RHSA-2011:1241 ecryptfs-utils update must also be     installed. (CVE-2011-1833, Moderate)

    * A flaw in the taskstats subsystem could allow a local, unprivileged user     to cause excessive CPU time and memory use. (CVE-2011-2484, Moderate)

    * Mapping expansion handling could allow a local, unprivileged user to     cause a denial of service. (CVE-2011-2496, Moderate)

    * GRO (Generic Receive Offload) fields could be left in an inconsistent     state. An attacker on the local network could use this flaw to cause a     denial of service. GRO is enabled by default in all network drivers that     support it. (CVE-2011-2723, Moderate)

    * RHSA-2011:1065 introduced a regression in the Ethernet bridge     implementation. If a system had an interface in a bridge, and an attacker     on the local network could send packets to that interface, they could cause     a denial of service on that system. Xen hypervisor and KVM (Kernel-based     Virtual Machine) hosts often deploy bridge interfaces. (CVE-2011-2942,     Moderate)

    * A flaw in the Xen hypervisor IOMMU error handling implementation could     allow a privileged guest user, within a guest operating system that has     direct control of a PCI device, to cause performance degradation on the     host and possibly cause it to hang. (CVE-2011-3131, Moderate)

    * IPv4 and IPv6 protocol sequence number and fragment ID generation could     allow a man-in-the-middle attacker to inject packets and possibly hijack     connections. Protocol sequence number and fragment IDs are now more random.
    (CVE-2011-3188, Moderate)

    * A flaw in the kernel's clock implementation could allow a local,     unprivileged user to cause a denial of service. (CVE-2011-3209, Moderate)

    * Non-member VLAN (virtual LAN) packet handling for interfaces in     promiscuous mode and also using the be2net driver could allow an attacker     on the local network to cause a denial of service. (CVE-2011-3347,     Moderate)

    * A flaw in the auerswald USB driver could allow a local, unprivileged user     to cause a denial of service or escalate their privileges by inserting a     specially-crafted USB device. (CVE-2009-4067, Low)

    * A flaw in the Trusted Platform Module (TPM) implementation could allow a     local, unprivileged user to leak information to user space. (CVE-2011-1160,     Low)

    * A local, unprivileged user could possibly mount a CIFS share that     requires authentication without knowing the correct password if the mount     was already mounted by another local user. (CVE-2011-1585, Low)

    Red Hat would like to thank Fernando Gont for reporting CVE-2011-2699;
    Darren Lavender for reporting CVE-2011-3191; the Ubuntu Security Team for     reporting CVE-2011-1833; Vasiliy Kulikov of Openwall for reporting     CVE-2011-2484; Robert Swiecki for reporting CVE-2011-2496; Brent Meshier     for reporting CVE-2011-2723; Dan Kaminsky for reporting CVE-2011-3188;
    Yasuaki Ishimatsu for reporting CVE-2011-3209; Somnath Kotur for reporting     CVE-2011-3347; Rafael Dominguez Vega for reporting CVE-2009-4067; and Peter     Huewe for reporting CVE-2011-1160. The Ubuntu Security Team acknowledges     Vasiliy Kulikov of Openwall and Dan Rosenberg as the original reporters of     CVE-2011-1833.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Somnath Kotur discovered an error in the Linux kernel's VLAN (virtual lan) and be2net drivers. An attacker on the local network could exploit this flaw to cause a denial of service.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

  - The proc file system could allow a local, unprivileged     user to obtain sensitive information or possibly cause     integrity issues. (CVE-2011-1020, Moderate)

  - Non-member VLAN (virtual LAN) packet handling for     interfaces in promiscuous mode and also using the be2net     driver could allow an attacker on the local network to     cause a denial of service. (CVE-2011-3347, Moderate)

  - A flaw was found in the Linux kernel in the way     splitting two extents in     ext4_ext_convert_to_initialized() worked. A local,     unprivileged user with access to mount and unmount ext4     file systems could use this flaw to cause a denial of     service. (CVE-2011-3638, Moderate)

  - A NULL pointer dereference flaw was found in the way the     Linux kernel's key management facility handled     user-defined key types. A local, unprivileged user could     use the keyctl utility to cause a denial of service.
    (CVE-2011-4110, Moderate)

This update also fixes several hundred bugs and adds enhancements.
Refer to the upstream Release Notes for information on the most significant of these changes.

All Scientific Linux 6 users are advised to install these updated packages, which correct these issues, and fix the bugs and add the enhancements noted. The system must be rebooted for this update to take effect.

Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fixes :

* The maximum file offset handling for ext4 file systems could allow a local, unprivileged user to cause a denial of service. (CVE-2011-2695, Important)

* IPv6 fragment identification value generation could allow a remote attacker to disrupt a target system's networking, preventing legitimate users from accessing its services. (CVE-2011-2699, Important)

* A malicious CIFS (Common Internet File System) server could send a specially crafted response to a directory read request that would result in a denial of service or privilege escalation on a system that has a CIFS share mounted. (CVE-2011-3191, Important)

* A local attacker could use mount.ecryptfs_private to mount (and then access) a directory they would otherwise not have access to. Note: To correct this issue, the RHSA-2011:1241 ecryptfs-utils update must also be installed. (CVE-2011-1833, Moderate)

* A flaw in the taskstats subsystem could allow a local, unprivileged user to cause excessive CPU time and memory use. (CVE-2011-2484, Moderate)

* Mapping expansion handling could allow a local, unprivileged user to cause a denial of service. (CVE-2011-2496, Moderate)

* GRO (Generic Receive Offload) fields could be left in an inconsistent state. An attacker on the local network could use this flaw to cause a denial of service. GRO is enabled by default in all network drivers that support it. (CVE-2011-2723, Moderate)

* RHSA-2011:1065 introduced a regression in the Ethernet bridge implementation. If a system had an interface in a bridge, and an attacker on the local network could send packets to that interface, they could cause a denial of service on that system. Xen hypervisor and KVM (Kernel-based Virtual Machine) hosts often deploy bridge interfaces. (CVE-2011-2942, Moderate)

* A flaw in the Xen hypervisor IOMMU error handling implementation could allow a privileged guest user, within a guest operating system that has direct control of a PCI device, to cause performance degradation on the host and possibly cause it to hang. (CVE-2011-3131, Moderate)

* IPv4 and IPv6 protocol sequence number and fragment ID generation could allow a man-in-the-middle attacker to inject packets and possibly hijack connections. Protocol sequence number and fragment IDs are now more random. (CVE-2011-3188, Moderate)

* A flaw in the kernel's clock implementation could allow a local, unprivileged user to cause a denial of service. (CVE-2011-3209, Moderate)

* Non-member VLAN (virtual LAN) packet handling for interfaces in promiscuous mode and also using the be2net driver could allow an attacker on the local network to cause a denial of service.
(CVE-2011-3347, Moderate)

* A flaw in the auerswald USB driver could allow a local, unprivileged user to cause a denial of service or escalate their privileges by inserting a specially crafted USB device. (CVE-2009-4067, Low)

* A flaw in the Trusted Platform Module (TPM) implementation could allow a local, unprivileged user to leak information to user space.
(CVE-2011-1160, Low)

* A local, unprivileged user could possibly mount a CIFS share that requires authentication without knowing the correct password if the mount was already mounted by another local user. (CVE-2011-1585, Low)

Red Hat would like to thank Fernando Gont for reporting CVE-2011-2699;
Darren Lavender for reporting CVE-2011-3191; the Ubuntu Security Team for reporting CVE-2011-1833; Vasiliy Kulikov of Openwall for reporting CVE-2011-2484; Robert Swiecki for reporting CVE-2011-2496; Brent Meshier for reporting CVE-2011-2723; Dan Kaminsky for reporting CVE-2011-3188; Yasuaki Ishimatsu for reporting CVE-2011-3209; Somnath Kotur for reporting CVE-2011-3347; Rafael Dominguez Vega for reporting CVE-2009-4067; and Peter Huewe for reporting CVE-2011-1160. The Ubuntu Security Team acknowledges Vasiliy Kulikov of Openwall and Dan Rosenberg as the original reporters of CVE-2011-1833.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security fixes :

  - The maximum file offset handling for ext4 file systems     could allow a local, unprivileged user to cause a denial     of service. (CVE-2011-2695, Important)

  - IPv6 fragment identification value generation could     allow a remote attacker to disrupt a target system's     networking, preventing legitimate users from accessing     its services. (CVE-2011-2699, Important)

  - A malicious CIFS (Common Internet File System) server     could send a specially crafted response to a directory     read request that would result in a denial of service or     privilege escalation on a system that has a CIFS share     mounted. (CVE-2011-3191, Important)

  - A local attacker could use mount.ecryptfs_private to     mount (and then access) a directory they would otherwise     not have access to. Note: To correct this issue, a     ecryptfs-utils update must also be installed.
    (CVE-2011-1833, Moderate)

  - A flaw in the taskstats subsystem could allow a local,     unprivileged user to cause excessive CPU time and memory     use. (CVE-2011-2484, Moderate)

  - Mapping expansion handling could allow a local,     unprivileged user to cause a denial of service.
    (CVE-2011-2496, Moderate)

  - GRO (Generic Receive Offload) fields could be left in an     inconsistent state. An attacker on the local network     could use this flaw to cause a denial of service. GRO is     enabled by default in all network drivers that support     it. (CVE-2011-2723, Moderate)

  - A previous update introduced a regression in the     Ethernet bridge implementation. If a system had an     interface in a bridge, and an attacker on the local     network could send packets to that interface, they could     cause a denial of service on that system. Xen hypervisor     and KVM (Kernel-based Virtual Machine) hosts often     deploy bridge interfaces. (CVE-2011-2942, Moderate)

  - A flaw in the Xen hypervisor IOMMU error handling     implementation could allow a privileged guest user,     within a guest operating system that has direct control     of a PCI device, to cause performance degradation on the     host and possibly cause it to hang. (CVE-2011-3131,     Moderate)

  - IPv4 and IPv6 protocol sequence number and fragment ID     generation could allow a man-in-the-middle attacker to     inject packets and possibly hijack connections. Protocol     sequence number and fragment IDs are now more random.
    (CVE-2011-3188, Moderate)

  - A flaw in the kernel's clock implementation could allow     a local, unprivileged user to cause a denial of service.
    (CVE-2011-3209, Moderate)

  - Non-member VLAN (virtual LAN) packet handling for     interfaces in promiscuous mode and also using the be2net     driver could allow an attacker on the local network to     cause a denial of service. (CVE-2011-3347, Moderate)

  - A flaw in the auerswald USB driver could allow a local,     unprivileged user to cause a denial of service or     escalate their privileges by inserting a specially     crafted USB device. (CVE-2009-4067, Low)

  - A flaw in the Trusted Platform Module (TPM)     implementation could allow a local, unprivileged user to     leak information to user space. (CVE-2011-1160, Low)

  - A local, unprivileged user could possibly mount a CIFS     share that requires authentication without knowing the     correct password if the mount was already mounted by     another local user. (CVE-2011-1585, Low)

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0116 advisory.

  - kernel: no access restrictions of /proc/pid/* after setuid program exec (CVE-2011-1020)

  - kernel: be2net: promiscuous mode and non-member VLAN packets DoS (CVE-2011-3347)

  - kernel: ext4: ext4_ext_insert_extent() kernel oops (CVE-2011-3638)

  - kernel: keys: NULL pointer deref in the user-defined key type (CVE-2011-4110)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-1386 advisory.

    - Revert: [xen] passthrough: block VT-d MSI trap injection (Paolo Bonzini) [716301 716302] {CVE-2011-1898}
    - [net] bridge: fix use after free in __br_deliver (Amerigo Wang) [730949 703045] {CVE-2011-2942}
    - [misc] remove div_long_long_rem (Prarit Bhargava) [732879 732614] {CVE-2011-3209}
    - [net] be2net: fix crash receiving non-member VLAN packets (Ivan Vecera) [736430 730239] {CVE-2011-3347}
    - [net] be2net: Use NTWK_RX_FILTER command for promiscous mode (Ivan Vecera) [736430 730239]     {CVE-2011-3347}
    - [net] be2net: non-member vlan pkts not received in promisc mode (Ivan Vecera) [736430 730239]     {CVE-2011-3347}
    - [net] be2net: remove bogus unlikely on vlan check (Ivan Vecera) [736430 730239] {CVE-2011-3347}
    - [net] Compute protocol seq numbers and fragment IDs using MD5 (Jiri Pirko) [732662 732663]     {CVE-2011-3188}
    - [crypto] Move md5_transform to lib/md5.c (Jiri Pirko) [732662 732663] {CVE-2011-3188}
    - [mm] avoid wrapping vm_pgoff in mremap and stack expansion (Jerome Marchand) [716543 716544]     {CVE-2011-2496}
    - [fs] ecryptfs: Add mount option to check uid of mounting device (Eric Sandeen) [731173 731174]     {CVE-2011-1833}
    - [net] ipv6: make fragment identifications less predictable (Jiri Pirko) [723430 723431] {CVE-2011-2699}
    - [net] ipv6: Remove unused skb argument of ipv6_select_ident (Jiri Pirko) [723430 723431] {CVE-2011-2699}
    - [misc] taskstats: don't allow duplicate entries in listener mode (Jerome Marchand) [715449 715450]     {CVE-2011-2484}
    - [net] gro: Only reset frag0 when skb can be pulled (Herbert Xu) [726553 679682] {CVE-2011-2723}
    - [xen] passthrough: block VT-d MSI trap injection (Paolo Bonzini) [716301 716302] {CVE-2011-1898}
    - [xen] iommu: disable bus-mastering on hw that causes IOMMU fault (Laszlo Ersek) [730342 730343]     {CVE-2011-3131}
    - [usb] auerswald: fix buffer overflow (Don Zickus) [722395 722396] {CVE-2009-4067}
    - [fs] cifs: fix possible memory corruption in CIFSFindNext (Jeff Layton) [732870 736654 732869 732471]     {CVE-2011-3191}
    - [fs] cifs: revert special handling for matching krb5 sessions (Jeff Layton) [697395 697396]     {CVE-2011-1585}
    - [fs] cifs: check for NULL session password (Jeff Layton) [697395 697396] {CVE-2011-1585}
    - [fs] cifs: fix NULL pointer dereference in cifs_find_smb_ses (Jeff Layton) [697395 697396]     {CVE-2011-1585}
    - [fs] cifs: clean up cifs_find_smb_ses (Jeff Layton) [697395 697396] {CVE-2011-1585}
    - [char] tpm: Fix uninitialized usage of data buffer (Stanislaw Gruszka) [684672 684673] {CVE-2011-1160}
    - [fs] ext4: Fix max size and logical block counting of extent file (Lukas Czerner) [722562 722563]     {CVE-2011-2695}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Updated kernel packages that fix multiple security issues, address several hundred bugs and add numerous enhancements are now available as part of the ongoing support and maintenance of Red Hat Enterprise Linux version 6. This is the second regular update.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

This update fixes the following security issues :

* The proc file system could allow a local, unprivileged user to obtain sensitive information or possibly cause integrity issues.
(CVE-2011-1020, Moderate)

* Non-member VLAN (virtual LAN) packet handling for interfaces in promiscuous mode and also using the be2net driver could allow an attacker on the local network to cause a denial of service.
(CVE-2011-3347, Moderate)

* A flaw was found in the Linux kernel in the way splitting two extents in ext4_ext_convert_to_initialized() worked. A local, unprivileged user with access to mount and unmount ext4 file systems could use this flaw to cause a denial of service. (CVE-2011-3638, Moderate)

* A NULL pointer dereference flaw was found in the way the Linux kernel's key management facility handled user-defined key types. A local, unprivileged user could use the keyctl utility to cause a denial of service. (CVE-2011-4110, Moderate)

Red Hat would like to thank Kees Cook for reporting CVE-2011-1020;
Somnath Kotur for reporting CVE-2011-3347; and Zheng Liu for reporting CVE-2011-3638.

This update also fixes several hundred bugs and adds enhancements.
Refer to the Red Hat Enterprise Linux 6.2 Release Notes for information on the most significant of these changes, and the Technical Notes for further information, both linked to in the References.

All Red Hat Enterprise Linux 6 users are advised to install these updated packages, which correct these issues, and fix the bugs and add the enhancements noted in the Red Hat Enterprise Linux 6.2 Release Notes and Technical Notes. The system must be rebooted for this update to take effect.

Somnath Kotur discovered an error in the Linux kernel's VLAN (virtual lan) and be2net drivers. An attacker on the local network could exploit this flaw to cause a denial of service. (CVE-2011-3347).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This kernel update of the openSUSE 12.1 kernel brings various bug and security fixes.

Following issues were fixed :

  - tcp: drop SYN+FIN messages (bnc#765102, CVE-2012-2663).

  - net: sock: validate data_len before allocating skb in     sock_alloc_send_pskb() (bnc#765320, CVE-2012-2136).

  - thp: avoid atomic64_read in pmd_read_atomic for 32bit     PAE (bnc#762991).

  - be2net: non-member vlan pkts not received in promiscous     mode (bnc#732006 CVE-2011-3347).

  - fcaps: clear the same personality flags as suid when     fcaps are used (bnc#758260 CVE-2012-2123).

  - macvtap: zerocopy: validate vectors before building skb     (bnc#758243 CVE-2012-2119).

  - macvtap: zerocopy: set SKBTX_DEV_ZEROCOPY only when skb     is built successfully (bnc#758243 CVE-2012-2119).

  - macvtap: zerocopy: put page when fail to get all     requested user pages (bnc#758243 CVE-2012-2119).

  - macvtap: zerocopy: fix offset calculation when building     skb (bnc#758243 CVE-2012-2119).

  - Avoid reading past buffer when calling GETACL     (bnc#762992).

  - Avoid beyond bounds copy while caching ACL (bnc#762992).

  - Fix length of buffer copied in __nfs4_get_acl_uncached     (bnc#762992).

  - hfsplus: Fix potential buffer overflows (bnc#760902     CVE-2009-4020).

  - usb/net: rndis: merge command codes. only net/hyperv     part

  - usb/net: rndis: remove ambiguous status codes. only     net/hyperv part

  - usb/net: rndis: break out <linux/rndis.h> defines. only     net/hyperv part

  - net/hyperv: Add flow control based on hi/low watermark.

  - hv: fix return type of hv_post_message().

  - Drivers: hv: util: Properly handle version negotiations.

  - Drivers: hv: Get rid of an unnecessary check in     vmbus_prep_negotiate_resp().

  - HID: hyperv: Set the hid drvdata correctly.

  - HID: hid-hyperv: Do not use hid_parse_report() directly.

  - [SCSI] storvsc: Properly handle errors from the host     (bnc#747404).

  - Delete patches.suse/suse-hv-storvsc-ignore-ata_16.patch.

  - patches.suse/suse-hv-pata_piix-ignore-disks.patch     replace our version of this patch with upstream variant:
    ata_piix: defer disks to the Hyper-V drivers by default     libata: add a host flag to ignore detected ATA devices.

  - mm: pmd_read_atomic: fix 32bit PAE pmd walk vs     pmd_populate SMP race condition (bnc#762991     CVE-2012-2373).

  - xfrm: take net hdr len into account for esp payload size     calculation (bnc#759545).

  - net/hyperv: Adding cancellation to ensure rndis filter     is closed.

  - xfs: Fix oops on IO error during     xlog_recover_process_iunlinks() (bnc#761681).

  - thp: reduce khugepaged freezing latency (bnc#760860).

  - igb: fix rtnl race in PM resume path (bnc#748859).

  - ixgbe: add missing rtnl_lock in PM resume path     (bnc#748859).

  - cdc_ether: Ignore bogus union descriptor for RNDIS     devices (bnc#735362). Taking the fix from net-next

  - Fix kABI breakage due to including proc_fs.h in     kernel/fork.c modversion changed because of changes in     struct proc_dir_entry (became defined) Refresh     patches.fixes/procfs-namespace-pid_ns-fix-leakage-on-for     k-failure.

  - Disabled MMC_TEST (bnc#760077).

  - Input: ALPS - add semi-MT support for v3 protocol     (bnc#716996).

  - Input: ALPS - add support for protocol versions 3 and 4     (bnc#716996).

  - Input: ALPS - remove assumptions about packet size     (bnc#716996).

  - Input: ALPS - add protocol version field in     alps_model_info (bnc#716996).

  - Input: ALPS - move protocol information to Documentation     (bnc#716996).

  - sysctl/defaults: kernel.hung_task_timeout ->     kernel.hung_task_timeout_secs (bnc#700174)

  - btrfs: partial revert of truncation improvements     (FATE#306586 bnc#748463 bnc#760279).

  - libata: skip old error history when counting probe     trials.

  - procfs, namespace, pid_ns: fix leakage upon fork()     failure (bnc#757783).

  - cdc-wdm: fix race leading leading to memory corruption     (bnc#759554). This patch fixes a race whereby a pointer     to a buffer would be overwritten while the buffer was in     use leading to a double free and a memory leak. This     causes crashes. This bug was introduced in 2.6.34

  - netfront: delay gARP until backend switches to     Connected.

  - xenbus: Reject replies with payload >     XENSTORE_PAYLOAD_MAX.

  - xenbus: check availability of XS_RESET_WATCHES command.

  - xenbus_dev: add missing error checks to watch handling.

  - drivers/xen/: use strlcpy() instead of strncpy().

  - blkfront: properly fail packet requests (bnc#745929).

  - Linux 3.1.10.

  - Update Xen config files.

  - Refresh other Xen patches.

  - tlan: add cast needed for proper 64 bit operation     (bnc#756840).

  - dl2k: Tighten ioctl permissions (bnc#758813).

  - mqueue: fix a vfsmount longterm reference leak     (bnc#757783).

  - cciss: Add IRQF_SHARED back in for the non-MSI(X)     interrupt handler (bnc#757789).

  - procfs: fix a vfsmount longterm reference leak     (bnc#757783).

  - uwb: fix error handling (bnc#731720). This fixes a     kernel error on unplugging an uwb dongle

  - uwb: fix use of del_timer_sync() in interrupt     (bnc#731720). This fixes a kernel warning on plugging in     an uwb dongle

  - acer-wmi: Detect communication hot key number.

  - acer-wmi: replaced the hard coded bitmap by the     communication devices bitmap from SMBIOS.

  - acer-wmi: add ACER_WMID_v2 interface flag to represent     new notebooks.

  - acer-wmi: No wifi rfkill on Sony machines.

  - acer-wmi: No wifi rfkill on Lenovo machines.

  - [media] cx22702: Fix signal strength.

  - fs: cachefiles: Add support for large files in     filesystem caching (bnc#747038).

  - Drivers: scsi: storvsc: Account for in-transit packets     in the RESET path.

  - CPU hotplug, cpusets, suspend: Don't touch cpusets     during suspend/resume (bnc#752460).

  - net: fix a potential rcu_read_lock() imbalance in     rt6_fill_node() (bnc#754186, bnc#736268).

  - This commit fixes suspend to ram breakage reported in     bnc#764864. Remove dud patch. The problem it addressed     is being respun upstream, is in tip, but not yet     mainlined. See bnc#752460 for details regarding the     problem the now removed patch fixed while breaking S2R.
    Delete     patches.fixes/cpusets-Dont-touch-cpusets-during-suspend-     or-resume.patch.

  - Remove dud patch. The problem it addressed is being     respun upstream, is in tip, but not yet mainlined.
    Delete     patches.fixes/cpusets-Dont-touch-cpusets-during-suspend-     or-resume.patch.

  - fix VM_FOREIGN users after c/s 878:eba6fe6d8d53     (bnc#760974).

  - gntdev: fix multi-page slot allocation (bnc#760974).

  - mm: pmd_read_atomic: fix 32bit PAE pmd walk vs     pmd_populateSMP race condition (bnc#762991     CVE-2012-2373).

  - thp: avoid atomic64_read in pmd_read_atomic for 32bit     PAE (bnc#762991).

  - sym53c8xx: Fix NULL pointer dereference in slave_destroy     (bnc#767786).

  - sky2: fix regression on Yukon Optima (bnc#731537).

The remote MiracleLinux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2012-228:02 advisory.

    The kernel package contains the Linux kernel (vmlinuz), the core of any Linux operating system.  The     kernel handles the basic functions of the operating system:  memory allocation, process allocation, device     input and output, etc.
    Security issues fixed with this release:
    CVE-2011-1020     The proc filesystem implementation in the Linux kernel 2.6.37 and earlier does not restrict access to the     /proc directory tree of a process after this process performs an exec of a setuid program, which allows     local users to obtain sensitive information or cause a denial of service via open, lseek, read, and write     system calls.
    CVE-2011-3347     CVE-2011-3638     No information available at the time of writing, see the CVE link below.
    CVE-2011-4110     The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to     cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined     key and updating a negative key into a fully instantiated key.
    CVE-2011-1162     The tpm_read function in the Linux kernel 2.6 does not properly clear memory, which might allow local     users to read the results of the previous TPM command.
    CVE-2011-1577     Heap-based buffer overflow in the is_gpt_valid function in fs/partitions/efi.c in the Linux kernel 2.6.38     and earlier allows physically proximate attackers to cause a denial of service (OOPS) or possibly have     unspecified other impact via a crafted size of the EFI GUID partition-table header on removable media.
    CVE-2012-0056     The mem_write function in Linux kernel 2.6.39 and other versions, when ASLR is disabled, does not properly     check permissions when writing to /proc/<pid>/mem, which allows local users to gain privileges by     modifying process memory, as demonstrated by Mempodipper.
    CVE-2011-2494     CVE-2011-2699     CVE-2011-2905     CVE-2011-3188     CVE-2011-3191     CVE-2011-3353     CVE-2011-3359     CVE-2011-3363     CVE-2011-3593     CVE-2011-4326     CVE-2011-4127     No information available at the time of writing, please refer to the CVE links     below.

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
68375	Oracle Linux 5：カーネル（ELSA-2011-1386）	Nessus	Oracle Linux Local Security Checks	2013/7/12	2026/2/9	critical
56865	Fedora 15 : kernel-2.6.41.1-1.fc15 (2011-15856)	Nessus	Fedora Local Security Checks	2011/11/18	2021/1/11	medium
58533	Ubuntu 11.10 : linux vulnerability (USN-1412-1)	Nessus	Ubuntu Local Security Checks	2012/3/30	2019/9/19	medium
181034	Oracle Linux 6 : kernel (ELSA-2011-1530)	Nessus	Oracle Linux Local Security Checks	2023/9/7	2026/2/9	medium
58493	Ubuntu 11.10 : linux vulnerabilities (USN-1405-1)	Nessus	Ubuntu Local Security Checks	2012/3/27	2019/9/19	critical
79280	RHEL 5 : rhev-hypervisor (RHSA-2011:1408)	Nessus	Red Hat Local Security Checks	2014/11/17	2021/1/14	medium
284479	MiracleLinux 3 : kernel-2.6.18-274.3.AXS3 (AXSA:2011-362:08)	Nessus	Miracle Linux Local Security Checks	2026/1/14	2026/1/19	critical
56577	RHEL 5 : kernel (RHSA-2011:1386)	Nessus	Red Hat Local Security Checks	2011/10/21	2025/3/24	critical
58492	USN-1404-1 : linux-ti-omap4 vulnerability	Nessus	Ubuntu Local Security Checks	2012/3/27	2012/3/27	high
61185	Scientific Linux Security Update : Scientific Linux 6 kernel on SL6.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	medium
56569	CentOS 5 : kernel (CESA-2011:1386)	Nessus	CentOS Local Security Checks	2011/10/21	2021/1/4	critical
61162	Scientific Linux Security Update : kernel on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	critical
64027	RHEL 6 : kernel (RHSA-2012:0116)	Nessus	Red Hat Local Security Checks	2013/1/24	2024/4/27	medium
68375	Oracle Linux 5 : kernel (ELSA-2011-1386)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2026/2/9	critical
57012	RHEL 6 : kernel (RHSA-2011:1530)	Nessus	Red Hat Local Security Checks	2011/12/6	2021/1/14	medium
58497	Ubuntu 10.04 LTS : linux-lts-backport-oneiric vulnerabilities (USN-1409-1)	Nessus	Ubuntu Local Security Checks	2012/3/27	2019/9/19	medium
74661	openSUSE Security Update : Kernel (openSUSE-SU-2012:0812-1)	Nessus	SuSE Local Security Checks	2014/6/13	2021/1/19	high
284039	MiracleLinux 4 : kernel-2.6.32-220.4.1.el6 (AXSA:2012-228:02)	Nessus	Miracle Linux Local Security Checks	2026/1/14	2026/2/12	critical

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