stack buffer overflow in the native Bluetooth stack

A stack buffer overflow flaw was found in the way the Bluetooth subsystem of the Linux kernel processed pending L2CAP configuration responses from a client. On systems with the stack protection feature enabled in the kernel (CONFIG_CC_STACKPROTECTOR=y, which is enabled on all architectures other than s390x and ppc64[le]), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to crash the system. Due to the nature of the stack protection feature, code execution cannot be fully ruled out, although we believe it is unlikely. On systems without the stack protection feature (ppc64[le]; the Bluetooth modules are not built on s390x), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to remotely execute arbitrary code on the system with ring 0 (kernel) privileges. (CVE-2017-1000251)

dereferencing NULL payload with nonzero length

A flaw was found in the implementation of associative arrays where the add_key systemcall and KEYCTL_UPDATE operations allowed for a NULL payload with a nonzero length. When accessing the payload within this length parameters value, an unprivileged user could trivially cause a NULL pointer dereference (kernel oops). (CVE-2017-15274)

xfs: unprivileged user kernel oops

A flaw was found where the XFS filesystem code mishandles a user-settable inode flag in the Linux kernel prior to 4.14-rc1. This can cause a local denial of service via a kernel panic.(CVE-2017-14340)

Information leak in the scsi driver

The sg_ioctl() function in 'drivers/scsi/sg.c' in the Linux kernel, from version 4.12-rc1 to 4.14-rc2, allows local users to obtain sensitive information from uninitialized kernel heap-memory locations via an SG_GET_REQUEST_TABLE ioctl call for '/dev/sg0'.
(CVE-2017-14991)

kvm: nVMX: L2 guest could access hardware(L0) CR8 register

Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization (nVMX) feature enabled (nested=1), is vulnerable to a crash due to disabled external interrupts. As L2 guest could access (r/w) hardware CR8 register of the host(L0). In a nested visualization setup, L2 guest user could use this flaw to potentially crash the host(L0) resulting in DoS. (CVE-2017-12154)

An update of the linux package has been released.

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

  - The XFS_IS_REALTIME_INODE macro in fs/xfs/xfs_linux.h in the Linux kernel before 4.13.2 does not verify     that a filesystem has a realtime device, which allows local users to cause a denial of service (NULL     pointer dereference and OOPS) via vectors related to setting an RHINHERIT flag on a directory.
    (CVE-2017-14340)

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-2017:2918 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

    * Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming     packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write     and privilege escalation. (CVE-2017-7184, Important)

    * A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are     implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a     raw packet socket (requires the CAP_NET_RAW capability) could use this flaw to elevate their privileges on     the system. (CVE-2017-1000111, Important)

    * An exploitable memory corruption flaw was found in the Linux kernel. The append path can be erroneously     switched from UFO to non-UFO in ip_ufo_append_data() when building an UFO packet with MSG_MORE option. If     unprivileged user namespaces are available, this flaw can be exploited to gain root privileges.
    (CVE-2017-1000112, Important)

    * Kernel memory corruption due to a buffer overflow was found in brcmf_cfg80211_mgmt_tx() function in     Linux kernels from v3.9-rc1 to v4.13-rc1. The vulnerability can be triggered by sending a crafted     NL80211_CMD_FRAME packet via netlink. This flaw is unlikely to be triggered remotely as certain userspace     code is needed for this. An unprivileged local user could use this flaw to induce kernel memory corruption     on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully     ruled out, although it is unlikely. (CVE-2017-7541, Moderate)

    * An integer overflow vulnerability in ip6_find_1stfragopt() function was found. A local attacker that has     privileges (of CAP_NET_RAW) to open raw socket can cause an infinite loop inside the ip6_find_1stfragopt()     function. (CVE-2017-7542, Moderate)

    * A kernel data leak due to an out-of-bound read was found in the Linux kernel in     inet_diag_msg_sctp{,l}addr_fill() and sctp_get_sctp_info() functions present since version 4.7-rc1 through     version 4.13. A data leak happens when these functions fill in sockaddr data structures used to export     socket's diagnostic information. As a result, up to 100 bytes of the slab data could be leaked to a     userspace. (CVE-2017-7558, Moderate)

    * The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon     entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to possibly     cause a situation where a value may be used after being freed (use-after-free) which may lead to memory     corruption or other unspecified other impact. (CVE-2017-11176, Moderate)

    * A divide-by-zero vulnerability was found in the __tcp_select_window function in the Linux kernel. This     can result in a kernel panic causing a local denial of service. (CVE-2017-14106, Moderate)

    * A flaw was found where the XFS filesystem code mishandles a user-settable inode flag in the Linux kernel     prior to 4.14-rc1. This can cause a local denial of service via a kernel panic. (CVE-2017-14340, Moderate)

    Red Hat would like to thank Chaitin Security Research Lab for reporting CVE-2017-7184; Willem de Bruijn     for reporting CVE-2017-1000111; and Andrey Konovalov for reporting CVE-2017-1000112. The CVE-2017-7558     issue was discovered by Stefano Brivio (Red Hat) and the CVE-2017-14340 issue was discovered by Dave     Chinner (Red Hat).

    Bug Fix(es):

    * kernel-rt packages have been upgraded to the 3.10.0-693.5.2 source tree, which provides number of bug     fixes over the previous version. (BZ#1489085)

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 SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :

  - CVE-2017-16649: The usbnet_generic_cdc_bind function in     drivers/net/usb/cdc_ether.c in the Linux kernel allowed     local users to cause a denial of service (divide-by-zero     error and system crash) or possibly have unspecified     other impact via a crafted USB device (bnc#1067085).

  - CVE-2017-16535: The usb_get_bos_descriptor function in     drivers/usb/core/config.c in the Linux kernel allowed     local users to cause a denial of service (out-of-bounds     read and system crash) or possibly have unspecified     other impact via a crafted USB device (bnc#1066700).

  - CVE-2017-15102: The tower_probe function in     drivers/usb/misc/legousbtower.c in the Linux kernel     allowed local users (who are physically proximate for     inserting a crafted USB device) to gain privileges by     leveraging a write-what-where condition that occurs     after a race condition and a NULL pointer dereference     (bnc#1066705).

  - CVE-2017-16531: drivers/usb/core/config.c in the Linux     kernel allowed local users to cause a denial of service     (out-of-bounds read and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to the USB_DT_INTERFACE_ASSOCIATION descriptor     (bnc#1066671).

  - CVE-2017-16529: The snd_usb_create_streams function in     sound/usb/card.c in the Linux kernel allowed local users     to cause a denial of service (out-of-bounds read and     system crash) or possibly have unspecified other impact     via a crafted USB device (bnc#1066650).

  - CVE-2017-16525: The usb_serial_console_disconnect     function in drivers/usb/serial/console.c in the Linux     kernel allowed local users to cause a denial of service     (use-after-free and system crash) or possibly have     unspecified other impact via a crafted USB device,     related to disconnection and failed setup (bnc#1066618).

  - CVE-2017-16537: The imon_probe function in     drivers/media/rc/imon.c in the Linux kernel allowed     local users to cause a denial of service (NULL pointer     dereference and system crash) or possibly have     unspecified other impact via a crafted USB device     (bnc#1066573).

  - CVE-2017-16536: The cx231xx_usb_probe function in     drivers/media/usb/cx231xx/cx231xx-cards.c in the Linux     kernel allowed local users to cause a denial of service     (NULL pointer dereference and system crash) or possibly     have unspecified other impact via a crafted USB device     (bnc#1066606).

  - CVE-2017-16527: sound/usb/mixer.c in the Linux kernel     allowed local users to cause a denial of service     (snd_usb_mixer_interrupt use-after-free and system     crash) or possibly have unspecified other impact via a     crafted USB device (bnc#1066625).

  - CVE-2017-13080: Wi-Fi Protected Access (WPA and WPA2)     allowed reinstallation of the Group Temporal Key (GTK)     during the group key handshake, allowing an attacker     within radio range to replay frames from access points     to clients (bnc#1063667).

  - CVE-2017-15274: security/keys/keyctl.c in the Linux     kernel did not consider the case of a NULL payload in     conjunction with a nonzero length value, which allowed     local users to cause a denial of service (NULL pointer     dereference and OOPS) via a crafted add_key or keyctl     system call, a different vulnerability than     CVE-2017-12192 (bnc#1045327).

  - CVE-2017-15265: Race condition in the ALSA subsystem in     the Linux kernel allowed local users to cause a denial     of service (use-after-free) or possibly have unspecified     other impact via crafted /dev/snd/seq ioctl calls,     related to sound/core/seq/seq_clientmgr.c and     sound/core/seq/seq_ports.c (bnc#1062520).

  - CVE-2017-14489: The iscsi_if_rx function in     drivers/scsi/scsi_transport_iscsi.c in the Linux kernel     allowed local users to cause a denial of service (panic)     by leveraging incorrect length validation (bnc#1059051).

  - CVE-2017-14340: The XFS_IS_REALTIME_INODE macro in     fs/xfs/xfs_linux.h in the Linux kernel did not verify     that a filesystem has a realtime device, which allowed     local users to cause a denial of service (NULL pointer     dereference and OOPS) via vectors related to setting an     RHINHERIT flag on a directory (bnc#1058524).

  - CVE-2017-14140: The move_pages system call in     mm/migrate.c in the Linux kernel doesn't check the     effective uid of the target process, enabling a local     attacker to learn the memory layout of a setuid     executable despite ASLR (bnc#1057179).

  - CVE-2017-14051: An integer overflow in the     qla2x00_sysfs_write_optrom_ctl function in     drivers/scsi/qla2xxx/qla_attr.c in the Linux kernel     allowed local users to cause a denial of service (memory     corruption and system crash) by leveraging root access     (bnc#1056588).

  - CVE-2017-10661: Race condition in fs/timerfd.c in the     Linux kernel allowed local users to gain privileges or     cause a denial of service (list corruption or     use-after-free) via simultaneous file-descriptor     operations that leverage improper might_cancel queueing     (bnc#1053152).

  - CVE-2017-12762: In /drivers/isdn/i4l/isdn_net.c: A     user-controlled buffer is copied into a local buffer of     constant size using strcpy without a length check which     can cause a buffer overflow. (bnc#1053148).

  - CVE-2017-8831: The saa7164_bus_get function in     drivers/media/pci/saa7164/saa7164-bus.c in the Linux     kernel allowed local users to cause a denial of service     (out-of-bounds array access) or possibly have     unspecified other impact by changing a certain     sequence-number value, aka a 'double fetch'     vulnerability (bnc#1037994).

  - CVE-2017-1000112: An exploitable memory corruption due     to UFO to non-UFO path switch was fixed. (bnc#1052311     bnc#1052365).

The update package also includes non-security fixes. See advisory for details.

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
104180	Amazon Linux AMI : kernel (ALAS-2017-914) (BlueBorne)	Nessus	Amazon Linux Local Security Checks	2017/10/27	2025/11/17	high
121734	Photon OS 1.0: Linux PHSA-2017-0036	Nessus	PhotonOS Local Security Checks	2019/2/7	2024/7/23	medium
248218	Linux Distros Unpatched Vulnerability : CVE-2017-14340	Nessus	Misc.	2025/8/11	2025/8/11	medium
104090	RHEL 6 : kernel-rt (RHSA-2017:2918)	Nessus	Red Hat Local Security Checks	2017/10/23	2024/11/5	high
105172	SUSE SLES11 Security Update : kernel (SUSE-SU-2017:3265-1) (KRACK)	Nessus	SuSE Local Security Checks	2017/12/12	2025/11/12	critical

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