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.

This update fixes the following security issues :

* A buffer overflow flaw was found in the way the Linux kernel's XFS file system implementation handled links with overly long path names.
A local, unprivileged user could use this flaw to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4077, Important)

* The fix for CVE-2011-2482 provided by RHSA-2011:1212 introduced a regression: on systems that do not have Security-Enhanced Linux (SELinux) in Enforcing mode, a socket lock race could occur between sctp_rcv() and sctp_accept(). A remote attacker could use this flaw to cause a denial of service. By default, SELinux runs in Enforcing mode on Red Hat Enterprise Linux 5. (CVE-2011-4348, Important)

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

* A missing validation flaw was found in the Linux kernel's m_stop() implementation. A local, unprivileged user could use this flaw to trigger a denial of service. (CVE-2011-3637, Moderate)

* A flaw was found in the Linux kernel's Journaling Block Device (JBD). A local attacker could use this flaw to crash the system by mounting a specially crafted ext3 or ext4 disk. (CVE-2011-4132, Moderate)

* A flaw was found in the Linux kernel's encode_share_access() implementation. A local, unprivileged user could use this flaw to trigger a denial of service by creating a regular file on an NFSv4 (Network File System version 4) file system via mknod().
(CVE-2011-4324, Moderate)

* A flaw was found in the Linux kernel's NFS implementation. A local, unprivileged user could use this flaw to cause a denial of service.
(CVE-2011-4325, Moderate)

* A missing boundary check was found in the Linux kernel's HFS file system implementation. A local attacker could use this flaw to cause a denial of service or escalate their privileges by mounting a specially crafted disk. (CVE-2011-4330, Moderate)

Red Hat would like to thank Kees Cook for reporting CVE-2011-1020, and Clement Lecigne for reporting CVE-2011-4330.

This update also fixes several bugs and adds one enhancement.
Documentation for these changes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect.

Dan Rosenberg discovered that multiple terminal ioctls did not correctly initialize structure memory. A local attacker could exploit this to read portions of kernel stack memory, leading to a loss of privacy. (CVE-2010-4076, CVE-2010-4077)

Alex Shi and Eric Dumazet discovered that the network stack did not correctly handle packet backlogs. A remote attacker could exploit this by sending a large amount of network traffic to cause the system to run out of memory, leading to a denial of service. (CVE-2010-4251, CVE-2010-4805)

It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020)

Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493)

Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577)

It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password.
(CVE-2011-1585)

It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767)

It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768)

Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM partitions. A local user could exploit this to cause a denial of service or escalate privileges. (CVE-2011-2182)

Andrea Righi discovered a race condition in the KSM memory merging support. If KSM was being used, a local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2183)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service.
(CVE-2011-2213)

Vasiliy Kulikov discovered that taskstats listeners were not correctly handled. A local attacker could exploit this to exhaust memory and CPU resources, leading to a denial of service. (CVE-2011-2484)

It was discovered that Bluetooth l2cap and rfcomm did not correctly initialize structures. A local attacker could exploit this to read portions of the kernel stack, leading to a loss of privacy.
(CVE-2011-2492)

Mauro Carvalho Chehab discovered that the si4713 radio driver did not correctly check the length of memory copies. If this hardware was available, a local attacker could exploit this to crash the system or gain root privileges. (CVE-2011-2700)

Herbert Xu discovered that certain fields were incorrectly handled when Generic Receive Offload (CVE-2011-2723)

Vasiliy Kulikov discovered that the Comedi driver did not correctly clear memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. (CVE-2011-2909)

The performance counter subsystem did not correctly handle certain counters. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2918)

A flaw was found in the Linux kernel's /proc/*/*map* interface. A local, unprivileged user could exploit this flaw to cause a denial of service. (CVE-2011-3637)

Ben Hutchings discovered several flaws in the Linux Rose (X.25 PLP) layer. A local user or a remote user on an X.25 network could exploit these flaws to execute arbitrary code as root. (CVE-2011-4914).

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 OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2013-0039 for details.

The remote MiracleLinux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2012-251:02 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 fixes 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-2011-4077     Buffer overflow in the xfs_readlink function in fs/xfs/xfs_vnodeops.c in XFS in the Linux kernel 2.6, when     CONFIG_XFS_DEBUG is disabled, allows local users to cause a denial of service (memory corruption and     crash) and possibly execute arbitrary code via an XFS image containing a symbolic link with a long     pathname.
    CVE-2011-4132     The cleanup_journal_tail function in the Journaling Block Device (JBD) functionality in the Linux kernel     2.6 allows local users to cause a denial of service (assertion error and kernel oops) via an ext3 or ext4     image with an invalid log first block value.
    CVE-2011-4325     The NFS implementation in Linux kernel before 2.6.31-rc6 calls certain functions without properly     initializing certain data, which allows local users to cause a denial of service (NULL pointer dereference     and O_DIRECT oops), as demonstrated using diotest4 from LTP.
    CVE-2011-4330     Stack-based buffer overflow in the hfs_mac2asc function in fs/hfs/trans.c in the Linux kernel 2.6 allows     local users to cause a denial of service (crash) and possibly execute arbitrary code via an HFS image with     a crafted len field.
    CVE-2011-3637     CVE-2011-4324     CVE-2011-4348     CVE-2011-3638     CVE-2011-4086     CVE-2011-4127     CVE-2012-0028     CVE-2012-0207     No description available at the time of writing, please refer to the CVE links below.
    Fixed bugs:
    - If an SCSI scan was initiated on a host in recovery mode, the scan failed without any error output; this     has been fixed and the SCSI layer now waits for the host to recover before starting scan operations.
    - Because SG_IO ioctls were not previously implemented correctly, sending an SG_IO ioctl request to a     virtio-blk disk caused the sending thread to enter an uninterruptible sleep state. SG_IO ioctls are now     rejected by the virtio-blk driver: the ioctl system call will simply return an ENOTTY (Inappropriate ioctl     for device) error and the thread will continue normally.

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.

It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020)

Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493)

Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. (CVE-2011-1833)

It was discovered that Bluetooth l2cap and rfcomm did not correctly initialize structures. A local attacker could exploit this to read portions of the kernel stack, leading to a loss of privacy.
(CVE-2011-2492)

It was discovered that GFS2 did not correctly check block sizes. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2689)

Fernando Gont discovered that the IPv6 stack used predictable fragment identification numbers. A remote attacker could exploit this to exhaust network resources, leading to a denial of service.
(CVE-2011-2699)

The performance counter subsystem did not correctly handle certain counters. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2918)

A flaw was found in the Linux kernel's /proc/*/*map* interface. A local, unprivileged user could exploit this flaw to cause a denial of service. (CVE-2011-3637)

Ben Hutchings discovered several flaws in the Linux Rose (X.25 PLP) layer. A local user or a remote user on an X.25 network could exploit these flaws to execute arbitrary code as root. (CVE-2011-4914).

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.

It was discovered that the /proc filesystem did not correctly handle permission changes when programs executed. A local attacker could hold open files to examine details about programs running with higher privileges, potentially increasing the chances of exploiting additional vulnerabilities. (CVE-2011-1020)

Vasiliy Kulikov discovered that the Bluetooth stack did not correctly clear memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. (CVE-2011-1078)

Vasiliy Kulikov discovered that the Bluetooth stack did not correctly check that device name strings were NULL terminated. A local attacker could exploit this to crash the system, leading to a denial of service, or leak contents of kernel stack memory, leading to a loss of privacy. (CVE-2011-1079)

Vasiliy Kulikov discovered that bridge network filtering did not check that name fields were NULL terminated. A local attacker could exploit this to leak contents of kernel stack memory, leading to a loss of privacy. (CVE-2011-1080)

Johan Hovold discovered that the DCCP network stack did not correctly handle certain packet combinations. A remote attacker could send specially crafted network traffic that would crash the system, leading to a denial of service. (CVE-2011-1093)

Peter Huewe discovered that the TPM device did not correctly initialize memory. A local attacker could exploit this to read kernel heap memory contents, leading to a loss of privacy. (CVE-2011-1160)

Dan Rosenberg discovered that the IRDA subsystem did not correctly check certain field sizes. If a system was using IRDA, a remote attacker could send specially crafted traffic to crash the system or gain root privileges. (CVE-2011-1180)

Ryan Sweat discovered that the GRO code did not correctly validate memory. In some configurations on systems using VLANs, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1478)

It was discovered that the security fix for CVE-2010-4250 introduced a regression. A remote attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-1479)

Dan Rosenberg discovered that the X.25 Rose network stack did not correctly handle certain fields. If a system was running with Rose enabled, a remote attacker could send specially crafted traffic to gain root privileges. (CVE-2011-1493)

It was discovered that the Stream Control Transmission Protocol (SCTP) implementation incorrectly calculated lengths. If the net.sctp.addip_enable variable was turned on, a remote attacker could send specially crafted traffic to crash the system. (CVE-2011-1573)

Ryan Sweat discovered that the kernel incorrectly handled certain VLAN packets. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service.
(CVE-2011-1576)

Timo Warns discovered that the GUID partition parsing routines did not correctly validate certain structures. A local attacker with physical access could plug in a specially crafted block device to crash the system, leading to a denial of service. (CVE-2011-1577)

Phil Oester discovered that the network bonding system did not correctly handle large queues. On some systems, a remote attacker could send specially crafted traffic to crash the system, leading to a denial of service. (CVE-2011-1581)

It was discovered that CIFS incorrectly handled authentication. When a user had a CIFS share mounted that required authentication, a local user could mount the same share without knowing the correct password.
(CVE-2011-1585)

It was discovered that the GRE protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ip_gre module was loading, and crash the system, leading to a denial of service. (CVE-2011-1767)

It was discovered that the IP/IP protocol incorrectly handled netns initialization. A remote attacker could send a packet while the ipip module was loading, and crash the system, leading to a denial of service. (CVE-2011-1768)

Ben Greear discovered that CIFS did not correctly handle direct I/O. A local attacker with access to a CIFS partition could exploit this to crash the system, leading to a denial of service. (CVE-2011-1771)

Timo Warns discovered that the EFI GUID partition table was not correctly parsed. A physically local attacker that could insert mountable devices could exploit this to crash the system or possibly gain root privileges. (CVE-2011-1776)

Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not correctly check the origin of mount points. A local attacker could exploit this to trick the system into unmounting arbitrary mount points, leading to a denial of service. (CVE-2011-1833)

Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM partitions. A local user could exploit this to cause a denial of service or escalate privileges. (CVE-2011-2182)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not correctly validate certain requests. A local attacker could exploit this to consume CPU resources, leading to a denial of service.
(CVE-2011-2213)

It was discovered that an mmap() call with the MAP_PRIVATE flag on '/dev/zero' was incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service.
(CVE-2011-2479)

Vasiliy Kulikov discovered that taskstats listeners were not correctly handled. A local attacker could exploit this to exhaust memory and CPU resources, leading to a denial of service. (CVE-2011-2484)

It was discovered that Bluetooth l2cap and rfcomm did not correctly initialize structures. A local attacker could exploit this to read portions of the kernel stack, leading to a loss of privacy.
(CVE-2011-2492)

Sami Liedes discovered that ext4 did not correctly handle missing root inodes. A local attacker could trigger the mount of a specially crafted filesystem to cause the system to crash, leading to a denial of service. (CVE-2011-2493)

Robert Swiecki discovered that mapping extensions were incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2496)

Dan Rosenberg discovered that the Bluetooth stack incorrectly handled certain L2CAP requests. If a system was using Bluetooth, a remote attacker could send specially crafted traffic to crash the system or gain root privileges. (CVE-2011-2497)

Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were being incorrectly handled. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2525)

It was discovered that GFS2 did not correctly check block sizes. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2689)

It was discovered that the EXT4 filesystem contained multiple off-by-one flaws. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2695)

Fernando Gont discovered that the IPv6 stack used predictable fragment identification numbers. A remote attacker could exploit this to exhaust network resources, leading to a denial of service.
(CVE-2011-2699)

Mauro Carvalho Chehab discovered that the si4713 radio driver did not correctly check the length of memory copies. If this hardware was available, a local attacker could exploit this to crash the system or gain root privileges. (CVE-2011-2700)

Herbert Xu discovered that certain fields were incorrectly handled when Generic Receive Offload (CVE-2011-2723)

The performance counter subsystem did not correctly handle certain counters. A local attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-2918)

Time Warns discovered that long symlinks were incorrectly handled on Be filesystems. A local attacker could exploit this with a malformed Be filesystem and crash the system, leading to a denial of service.
(CVE-2011-2928)

Qianfeng Zhang discovered that the bridge networking interface incorrectly handled certain network packets. A remote attacker could exploit this to crash the system, leading to a denial of service.
(CVE-2011-2942)

Dan Kaminsky discovered that the kernel incorrectly handled random sequence number generation. An attacker could use this flaw to possibly predict sequence numbers and inject packets. (CVE-2011-3188)

Darren Lavender discovered that the CIFS client incorrectly handled certain large values. A remote attacker with a malicious server could exploit this to crash the system or possibly execute arbitrary code as the root user. (CVE-2011-3191)

Yasuaki Ishimatsu discovered a flaw in the kernel's clock implementation. A local unprivileged attacker could exploit this causing a denial of service. (CVE-2011-3209)

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that had no prefixpaths. A local attacker with access to a CIFS partition could exploit this to crash the system, leading to a denial of service. (CVE-2011-3363)

A flaw was discovered in the Linux kernel's AppArmor security interface when invalid information was written to it. An unprivileged local user could use this to cause a denial of service on the system.
(CVE-2011-3619)

A flaw was found in the Linux kernel's /proc/*/*map* interface. A local, unprivileged user could exploit this flaw to cause a denial of service. (CVE-2011-3637)

Scot Doyle discovered that the bridge networking interface incorrectly handled certain network packets. A remote attacker could exploit this to crash the system, leading to a denial of service. (CVE-2011-4087)

A bug was found in the way headroom check was performed in udp6_ufo_fragment() function. A remote attacker could use this flaw to crash the system. (CVE-2011-4326)

Ben Hutchings discovered several flaws in the Linux Rose (X.25 PLP) layer. A local user or a remote user on an X.25 network could exploit these flaws to execute arbitrary code as root. (CVE-2011-4914).

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The m_stop function in fs/proc/task_mmu.c in the Linux kernel before 2.6.39 allows local users to cause a     denial of service (OOPS) via vectors that trigger an m_start error. (CVE-2011-3637)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0010 advisory.

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

    This update fixes the following security issues:

    * 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)

    * The way fragmented IPv6 UDP datagrams over the bridge with UDP     Fragmentation Offload (UFO) functionality on were handled could allow a     remote attacker to cause a denial of service. (CVE-2011-4326, Important)

    * 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)

    * 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 numbers and fragment IDs are now more     random. (CVE-2011-3188, Moderate)

    * A flaw in the FUSE (Filesystem in Userspace) implementation could allow     a local user in the fuse group who has access to mount a FUSE file system     to cause a denial of service. (CVE-2011-3353, Moderate)

    * A flaw in the b43 driver. If a system had an active wireless interface     that uses the b43 driver, an attacker able to send a specially-crafted     frame to that interface could cause a denial of service. (CVE-2011-3359,     Moderate)

    * A flaw in the way CIFS shares with DFS referrals at their root were     handled could allow an attacker on the local network, who is able to deploy     a malicious CIFS server, to create a CIFS network share that, when mounted,     would cause the client system to crash. (CVE-2011-3363, Moderate)

    * A flaw in the m_stop() implementation could allow a local, unprivileged     user to trigger a denial of service. (CVE-2011-3637, Moderate)

    * Flaws in ghash_update() and ghash_final() could allow a local,     unprivileged user to cause a denial of service. (CVE-2011-4081, Moderate)

    * A flaw in the key management facility could allow a local, unprivileged     user to cause a denial of service via the keyctl utility. (CVE-2011-4110,     Moderate)

    * A flaw in the Journaling Block Device (JBD) could allow a local attacker     to crash the system by mounting a specially-crafted ext3 or ext4 disk.
    (CVE-2011-4132, Moderate)

    * A flaw in the way memory containing security-related data was handled in     tpm_read() could allow a local, unprivileged user to read the results of a     previously run TPM command. (CVE-2011-1162, Low)

    * I/O statistics from the taskstats subsystem could be read without any     restrictions, which could allow a local, unprivileged user to gather     confidential information, such as the length of a password used in a     process. (CVE-2011-2494, Low)

    * Flaws in tpacket_rcv() and packet_recvmsg() could allow a local,     unprivileged user to leak information to user-space. (CVE-2011-2898, Low)

    Red Hat would like to thank Darren Lavender for reporting CVE-2011-3191;
    Brent Meshier for reporting CVE-2011-2723; Dan Kaminsky for reporting     CVE-2011-3188; Yogesh Sharma for reporting CVE-2011-3363; Nick Bowler for     reporting CVE-2011-4081; Peter Huewe for reporting CVE-2011-1162; and     Vasiliy Kulikov of Openwall for reporting CVE-2011-2494.

    This update also fixes the following bugs:

    * Previously, a mismatch in the build-id of the kernel-rt and the one in     the related debuginfo package caused failures in SystemTap and perf.
    (BZ#768413)

    * IBM x3650m3 systems were not able to boot the MRG Realtime kernel because     they require a pmcraid driver that was not available. The pmcraid driver is     included in this update. (BZ#753992)

    Users should upgrade to these updated packages, which correct these issues.
    The system must be rebooted for this update to take effect.

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.

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

This update fixes the following security issues :

  - A buffer overflow flaw was found in the way the Linux     kernel's XFS file system implementation handled links     with overly long path names. A local, unprivileged user     could use this flaw to cause a denial of service or     escalate their privileges by mounting a specially     crafted disk. (CVE-2011-4077, Important)

  - The fix for CVE-2011-2482 provided by a previous update     introduced a regression: on systems that do not have     Security-Enhanced Linux (SELinux) in Enforcing mode, a     socket lock race could occur between sctp_rcv() and     sctp_accept(). A remote attacker could use this flaw to     cause a denial of service. By default, SELinux runs in     Enforcing mode on Scientific Linux 5. (CVE-2011-4348,     Important)

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

  - A missing validation flaw was found in the Linux     kernel's m_stop() implementation. A local, unprivileged     user could use this flaw to trigger a denial of service.
    (CVE-2011-3637, Moderate)

  - A flaw was found in the Linux kernel's Journaling Block     Device (JBD). A local attacker could use this flaw to     crash the system by mounting a specially crafted ext3 or     ext4 disk. (CVE-2011-4132, Moderate)

  - A flaw was found in the Linux kernel's     encode_share_access() implementation. A local,     unprivileged user could use this flaw to trigger a     denial of service by creating a regular file on an NFSv4     (Network File System version 4) file system via mknod().
    (CVE-2011-4324, Moderate)

  - A flaw was found in the Linux kernel's NFS     implementation. A local, unprivileged user could use     this flaw to cause a denial of service. (CVE-2011-4325,     Moderate)

  - A missing boundary check was found in the Linux kernel's     HFS file system implementation. A local attacker could     use this flaw to cause a denial of service or escalate     their privileges by mounting a specially crafted disk.
    (CVE-2011-4330, Moderate)

This update also fixes several bugs and adds one enhancement.

Users should upgrade to these updated packages, which contain backported patches to correct these issues, and fix the bugs and add the enhancement noted in the Technical Notes. The system must be rebooted for this update to take effect.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2012-0007 advisory.

    - Revert:  [block] add and use scsi_blk_cmd_ioctl (Paolo Bonzini) [752385 752386] {CVE-2011-4127}
    - Revert:  [block] fail SCSI passthrough ioctls on partition devices (Paolo Bonzini) [752385 752386]     {CVE-2011-4127}
    - Revert:  [dm] do not forward ioctls from logical volumes to the underlying device (Paolo Bonzini)     [752385 752386] {CVE-2011-4127}
    - Revert:  [scsi] fix 32-on-64 block device ioctls (Paolo Bonzini) [752385 752386] {CVE-2011-4127}
    - [scsi] fix 32-on-64 block device ioctls (Paolo Bonzini) [752385 752386] {CVE-2011-4127}
    - [fs] xfs: Fix memory corruption in xfs_readlink (Carlos Maiolino) [749159 749160] {CVE-2011-4077}
    - [fs] nfs: remove BUG() from encode_share_access() (Jeff Layton) [755442 754901] {CVE-2011-4324}
    - [fs] hfs: add sanity check for file name length (Eric Sandeen) [755432 755433] {CVE-2011-4330}
    - [fs] jbd/jbd2: validate sb->s_first in journal_get_superblock (Eryu Guan) [753343 706810]     {CVE-2011-4132}
    - [fs] proc: fix oops on invalid /proc/<pid>/maps access (Johannes Weiner) [747851 747699] {CVE-2011-3637}
    - [fs] proc: close race with exec in mem_read() (Johannes Weiner) [692041 692042] {CVE-2011-1020}
    - [mm] implement access_remote_vm (Johannes Weiner) [692041 692042] {CVE-2011-1020}
    - [mm] factor out main logic of access_process_vm (Johannes Weiner) [692041 692042] {CVE-2011-1020}
    - [mm] use mm_struct to resolve gate vma's in __get_user_pages (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [mm] make in_gate_area take mm_struct instead of a task_struct (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [mm] make get_gate_vma take mm_struct instead of task_struct (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [x86_64] mark assoc mm when running task in 32 bit compat mode (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [misc] sched: add ctx tag to mm running task in ia32 compat mode (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [fs] proc: require the target to be tracable (or yourself) (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [fs] proc: close race in /proc/*/environ (Johannes Weiner) [692041 692042] {CVE-2011-1020}
    - [fs] proc: report errors in /proc/*/*map* sanely (Johannes Weiner) [692041 692042] {CVE-2011-1020}
    - [fs] proc: shift down_read(mmap_sem) to the caller (Johannes Weiner) [692041 692042] {CVE-2011-1020}
    - [fs] detect exec transition phase with new mm but old creds (Johannes Weiner) [692041 692042]     {CVE-2011-1020}
    - [dm] do not forward ioctls from logical volumes to the underlying device (Paolo Bonzini) [752385 752386]     {CVE-2011-4127}
    - [block] fail SCSI passthrough ioctls on partition devices (Paolo Bonzini) [752385 752386]     {CVE-2011-4127}
    - [block] add and use scsi_blk_cmd_ioctl (Paolo Bonzini) [752385 752386] {CVE-2011-4127}
    - [fs] nfs: Fix an O_DIRECT Oops (Jeff Layton) [755457 754620] {CVE-2011-4325}
    - [net] sctp: Fix another race during accept/peeloff (Thomas Graf) [757146 714870] {CVE-2011-4348}

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
57485	CentOS 5 : kernel (CESA-2012:0007)	Nessus	CentOS Local Security Checks	2012/1/12	2021/1/4	medium
56305	Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-1216-1)	Nessus	Ubuntu Local Security Checks	2011/9/27	2019/9/19	high
79507	OracleVM 2.2 : kernel (OVMSA-2013-0039)	Nessus	OracleVM Local Security Checks	2014/11/26	2021/1/4	high
284288	MiracleLinux 3 : kernel-2.6.18-274.6.AXS3 (AXSA:2012-251:02)	Nessus	Miracle Linux Local Security Checks	2026/1/14	2026/1/19	high
56256	Ubuntu 11.04 : linux vulnerabilities (USN-1211-1)	Nessus	Ubuntu Local Security Checks	2011/9/22	2019/10/16	high
56768	Ubuntu 10.04 LTS : linux-lts-backport-natty vulnerabilities (USN-1256-1)	Nessus	Ubuntu Local Security Checks	2011/11/10	2019/9/19	critical
217558	Linux Distros Unpatched Vulnerability : CVE-2011-3637	Nessus	Misc.	2025/3/3	2025/9/3	medium
76635	RHEL 6 : kernel-rt (RHSA-2012:0010)	Nessus	Red Hat Local Security Checks	2014/7/22	2025/3/24	critical
61215	Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20120110)	Nessus	Scientific Linux Local Security Checks	2012/8/1	2021/1/14	high
68427	Oracle Linux 5 : kernel (ELSA-2012-0007)	Nessus	Oracle Linux Local Security Checks	2013/7/12	2026/2/9	medium

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