The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a keepalive action is associated with a stream socket, which allows local users to cause a denial of service (system crash) by leveraging the ability to create a raw socket.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-1272 advisory.

  - The report_fixup functions in the HID subsystem in the Linux kernel before 3.16.2 might allow physically     proximate attackers to cause a denial of service (out-of-bounds write) via a crafted device that provides     a small report descriptor, related to (1) drivers/hid/hid-cherry.c, (2) drivers/hid/hid-kye.c, (3)     drivers/hid/hid-lg.c, (4) drivers/hid/hid-monterey.c, (5) drivers/hid/hid-petalynx.c, and (6)     drivers/hid/hid-sunplus.c. (CVE-2014-3184)

  - Race condition in the tlv handler functionality in the snd_ctl_elem_user_tlv function in     sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 allows local     users to obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access.
    (CVE-2014-4652)

  - The Linux kernel through 3.14.5 does not properly consider the presence of hugetlb entries, which allows     local users to cause a denial of service (memory corruption or system crash) by accessing certain memory     locations, as demonstrated by triggering a race condition via numa_maps read operations during hugepage     migration, related to fs/proc/task_mmu.c and mm/mempolicy.c. (CVE-2014-3940)

  - The ieee80211_fragment function in net/mac80211/tx.c in the Linux kernel before 3.13.5 does not properly     maintain a certain tail pointer, which allows remote attackers to obtain sensitive cleartext information     by reading packets. (CVE-2014-8709)

  - arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1     allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local     users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area     system call and later reads a 16-bit value. (CVE-2014-8133)

  - Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs     subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer     overflow and system crash) or possibly gain privileges via a crafted filename. (CVE-2014-9683)

  - The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS     lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of     service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER     instruction. (CVE-2015-0239)

  - Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local     users to gain privileges by executing a setuid program at a time instant when a chown to root is in     progress, and the ownership is changed but the setuid bit is not yet stripped. (CVE-2015-3339)

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

The SUSE Linux Enterprise 10 SP4 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs have been fixed :

CVE-2015-2041: A information leak in the llc2_timeout_table was fixed (bnc#919007).

CVE-2014-9322: arch/x86/kernel/entry_64.S in the Linux kernel did not properly handle faults associated with the Stack Segment (SS) segment register, which allowed local users to gain privileges by triggering an IRET instruction that leads to access to a GS Base address from the wrong space (bnc#910251).

CVE-2014-9090: The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel did not properly handle faults associated with the Stack Segment (SS) segment register, which allowed local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the 1-clock-tests test suite (bnc#907818).

CVE-2014-4667: The sctp_association_free function in net/sctp/associola.c in the Linux kernel did not properly manage a certain backlog value, which allowed remote attackers to cause a denial of service (socket outage) via a crafted SCTP packet (bnc#885422).

CVE-2014-3673: The SCTP implementation in the Linux kernel allowed remote attackers to cause a denial of service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and net/sctp/sm_statefuns.c (bnc#902346).

CVE-2014-3185: Multiple buffer overflows in the command_port_read_callback function in drivers/usb/serial/whiteheat.c in the Whiteheat USB Serial Driver in the Linux kernel allowed physically proximate attackers to execute arbitrary code or cause a denial of service (memory corruption and system crash) via a crafted device that provides a large amount of (1) EHCI or (2) XHCI data associated with a bulk response (bnc#896391).

CVE-2014-3184: The report_fixup functions in the HID subsystem in the Linux kernel might have allowed physically proximate attackers to cause a denial of service (out-of-bounds write) via a crafted device that provides a small report descriptor, related to (1) drivers/hid/hid-cherry.c, (2) drivers/hid/hid-kye.c, (3) drivers/hid/hid-lg.c, (4) drivers/hid/hid-monterey.c, (5) drivers/hid/hid-petalynx.c, and (6) drivers/hid/hid-sunplus.c (bnc#896390).

CVE-2014-1874: The security_context_to_sid_core function in security/selinux/ss/services.c in the Linux kernel allowed local users to cause a denial of service (system crash) by leveraging the CAP_MAC_ADMIN capability to set a zero-length security context (bnc#863335).

CVE-2014-0181: The Netlink implementation in the Linux kernel did not provide a mechanism for authorizing socket operations based on the opener of a socket, which allowed local users to bypass intended access restrictions and modify network configurations by using a Netlink socket for the (1) stdout or (2) stderr of a setuid program (bnc#875051).

CVE-2013-4299: Interpretation conflict in drivers/md/dm-snap-persistent.c in the Linux kernel allowed remote authenticated users to obtain sensitive information or modify data via a crafted mapping to a snapshot block device (bnc#846404).

CVE-2013-2147: The HP Smart Array controller disk-array driver and Compaq SMART2 controller disk-array driver in the Linux kernel did not initialize certain data structures, which allowed local users to obtain sensitive information from kernel memory via (1) a crafted IDAGETPCIINFO command for a /dev/ida device, related to the ida_locked_ioctl function in drivers/block/cpqarray.c or (2) a crafted CCISS_PASSTHRU32 command for a /dev/cciss device, related to the cciss_ioctl32_passthru function in drivers/block/cciss.c (bnc#823260).

CVE-2012-6657: The sock_setsockopt function in net/core/sock.c in the Linux kernel did not ensure that a keepalive action is associated with a stream socket, which allowed local users to cause a denial of service (system crash) by leveraging the ability to create a raw socket (bnc#896779).

CVE-2012-3400: Heap-based buffer overflow in the udf_load_logicalvol function in fs/udf/super.c in the Linux kernel allowed remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted UDF filesystem (bnc#769784).

CVE-2012-2319: Multiple buffer overflows in the hfsplus filesystem implementation in the Linux kernel allowed local users to gain privileges via a crafted HFS plus filesystem, a related issue to CVE-2009-4020 (bnc#760902).

CVE-2012-2313: The rio_ioctl function in drivers/net/ethernet/dlink/dl2k.c in the Linux kernel did not restrict access to the SIOCSMIIREG command, which allowed local users to write data to an Ethernet adapter via an ioctl call (bnc#758813).

CVE-2011-4132: The cleanup_journal_tail function in the Journaling Block Device (JBD) functionality in the Linux kernel 2.6 allowed 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' (bnc#730118).

CVE-2011-4127: The Linux kernel did not properly restrict SG_IO ioctl calls, which allowed local users to bypass intended restrictions on disk read and write operations by sending a SCSI command to (1) a partition block device or (2) an LVM volume (bnc#738400).

CVE-2011-1585: The cifs_find_smb_ses function in fs/cifs/connect.c in the Linux kernel did not properly determine the associations between users and sessions, which allowed local users to bypass CIFS share authentication by leveraging a mount of a share by a different user (bnc#687812).

CVE-2011-1494: Integer overflow in the _ctl_do_mpt_command function in drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel might have allowed local users to gain privileges or cause a denial of service (memory corruption) via an ioctl call specifying a crafted value that triggers a heap-based buffer overflow (bnc#685402).

CVE-2011-1495: drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel did not validate (1) length and (2) offset values before performing memory copy operations, which might allow local users to gain privileges, cause a denial of service (memory corruption), or obtain sensitive information from kernel memory via a crafted ioctl call, related to the _ctl_do_mpt_command and _ctl_diag_read_buffer functions (bnc#685402).

CVE-2011-1493: Array index error in the rose_parse_national function in net/rose/rose_subr.c in the Linux kernel allowed remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact by composing FAC_NATIONAL_DIGIS data that specifies a large number of digipeaters, and then sending this data to a ROSE socket (bnc#681175).

CVE-2011-4913: The rose_parse_ccitt function in net/rose/rose_subr.c in the Linux kernel did not validate the FAC_CCITT_DEST_NSAP and FAC_CCITT_SRC_NSAP fields, which allowed remote attackers to (1) cause a denial of service (integer underflow, heap memory corruption, and panic) via a small length value in data sent to a ROSE socket, or (2) conduct stack-based buffer overflow attacks via a large length value in data sent to a ROSE socket (bnc#681175).

CVE-2011-4914: The ROSE protocol implementation in the Linux kernel did not verify that certain data-length values are consistent with the amount of data sent, which might allow remote attackers to obtain sensitive information from kernel memory or cause a denial of service (out-of-bounds read) via crafted data to a ROSE socket (bnc#681175).

CVE-2011-1476: Integer underflow in the Open Sound System (OSS) subsystem in the Linux kernel on unspecified non-x86 platforms allowed local users to cause a denial of service (memory corruption) by leveraging write access to /dev/sequencer (bnc#681999).

CVE-2011-1477: Multiple array index errors in sound/oss/opl3.c in the Linux kernel allowed local users to cause a denial of service (heap memory corruption) or possibly gain privileges by leveraging write access to /dev/sequencer (bnc#681999).

CVE-2011-1163: The osf_partition function in fs/partitions/osf.c in the Linux kernel did not properly handle an invalid number of partitions, which might allow local users to obtain potentially sensitive information from kernel heap memory via vectors related to partition-table parsing (bnc#679812).

CVE-2011-1090: The __nfs4_proc_set_acl function in fs/nfs/nfs4proc.c in the Linux kernel stored NFSv4 ACL data in memory that is allocated by kmalloc but not properly freed, which allowed local users to cause a denial of service (panic) via a crafted attempt to set an ACL (bnc#677286).

CVE-2014-9584: The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel did not validate a length value in the Extensions Reference (ER) System Use Field, which allowed local users to obtain sensitive information from kernel memory via a crafted iso9660 image (bnc#912654).

CVE-2014-9420: The rock_continue function in fs/isofs/rock.c in the Linux kernel did not restrict the number of Rock Ridge continuation entries, which allowed local users to cause a denial of service (infinite loop, and system crash or hang) via a crafted iso9660 image (bnc#911325).

CVE-2014-5471: Stack consumption vulnerability in the parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel allowed local users to cause a denial of service (uncontrolled recursion, and system crash or reboot) via a crafted iso9660 image with a CL entry referring to a directory entry that has a CL entry (bnc#892490).

CVE-2014-5472: The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel allowed local users to cause a denial of service (unkillable mount process) via a crafted iso9660 image with a self-referential CL entry (bnc#892490).

CVE-2014-3917: kernel/auditsc.c in the Linux kernel, when CONFIG_AUDITSYSCALL is enabled with certain syscall rules, allowed local users to obtain potentially sensitive single-bit values from kernel memory or cause a denial of service (OOPS) via a large value of a syscall number (bnc#880484).

CVE-2014-4652: Race condition in the tlv handler functionality in the snd_ctl_elem_user_tlv function in sound/core/control.c in the ALSA control implementation in the Linux kernel allowed local users to obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access (bnc#883795).

CVE-2014-4654: The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel did not check authorization for SNDRV_CTL_IOCTL_ELEM_REPLACE commands, which allowed local users to remove kernel controls and cause a denial of service (use-after-free and system crash) by leveraging /dev/snd/controlCX access for an ioctl call (bnc#883795).

CVE-2014-4655: The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel did not properly maintain the user_ctl_count value, which allowed local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl calls (bnc#883795).

CVE-2014-4653: sound/core/control.c in the ALSA control implementation in the Linux kernel did not ensure possession of a read/write lock, which allowed local users to cause a denial of service (use-after-free) and obtain sensitive information from kernel memory by leveraging /dev/snd/controlCX access (bnc#883795).

CVE-2014-4656: Multiple integer overflows in sound/core/control.c in the ALSA control implementation in the Linux kernel allowed local users to cause a denial of service by leveraging /dev/snd/controlCX access, related to (1) index values in the snd_ctl_add function and (2) numid values in the snd_ctl_remove_numid_conflict function (bnc#883795).

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.

The SUSE Linux Enterprise 11 Service Pack 1 LTSS kernel was updated to fix security issues on kernels on the x86_64 architecture.

The following security bugs have been fixed :

  - CVE-2013-4299: Interpretation conflict in     drivers/md/dm-snap-persistent.c in the Linux kernel     through 3.11.6 allowed remote authenticated users to     obtain sensitive information or modify data via a     crafted mapping to a snapshot block device (bnc#846404).

  - CVE-2014-8160: SCTP firewalling failed until the SCTP     module was loaded (bnc#913059).

  - CVE-2014-9584: The parse_rock_ridge_inode_internal     function in fs/isofs/rock.c in the Linux kernel before     3.18.2 did not validate a length value in the Extensions     Reference (ER) System Use Field, which allowed local     users to obtain sensitive information from kernel memory     via a crafted iso9660 image (bnc#912654).

  - CVE-2014-9585: The vdso_addr function in     arch/x86/vdso/vma.c in the Linux kernel through 3.18.2     did not properly choose memory locations for the vDSO     area, which made it easier for local users to bypass the     ASLR protection mechanism by guessing a location at the     end of a PMD (bnc#912705).

  - CVE-2014-9420: The rock_continue function in     fs/isofs/rock.c in the Linux kernel through 3.18.1 did     not restrict the number of Rock Ridge continuation     entries, which allowed local users to cause a denial of     service (infinite loop, and system crash or hang) via a     crafted iso9660 image (bnc#911325).

  - CVE-2014-0181: The Netlink implementation in the Linux     kernel through 3.14.1 did not provide a mechanism for     authorizing socket operations based on the opener of a     socket, which allowed local users to bypass intended     access restrictions and modify network configurations by     using a Netlink socket for the (1) stdout or (2) stderr     of a setuid program (bnc#875051).

  - CVE-2010-5313: Race condition in arch/x86/kvm/x86.c in     the Linux kernel before 2.6.38 allowed L2 guest OS users     to cause a denial of service (L1 guest OS crash) via a     crafted instruction that triggers an L2 emulation     failure report, a similar issue to CVE-2014-7842     (bnc#907822).

  - CVE-2014-7842: Race condition in arch/x86/kvm/x86.c in     the Linux kernel before 3.17.4 allowed guest OS users to     cause a denial of service (guest OS crash) via a crafted     application that performs an MMIO transaction or a PIO     transaction to trigger a guest userspace emulation error     report, a similar issue to CVE-2010-5313 (bnc#905312).

  - CVE-2014-3688: The SCTP implementation in the Linux     kernel before 3.17.4 allowed remote attackers to cause a     denial of service (memory consumption) by triggering a     large number of chunks in an associations output queue,     as demonstrated by ASCONF probes, related to     net/sctp/inqueue.c and net/sctp/sm_statefuns.c     (bnc#902351).

  - CVE-2014-3687: The sctp_assoc_lookup_asconf_ack function     in net/sctp/associola.c in the SCTP implementation in     the Linux kernel through 3.17.2 allowed remote attackers     to cause a denial of service (panic) via duplicate     ASCONF chunks that trigger an incorrect uncork within     the side-effect interpreter (bnc#902349).

  - CVE-2014-3673: The SCTP implementation in the Linux     kernel through 3.17.2 allowed remote attackers to cause     a denial of service (system crash) via a malformed     ASCONF chunk, related to net/sctp/sm_make_chunk.c and     net/sctp/sm_statefuns.c (bnc#902346).

  - CVE-2014-7841: The sctp_process_param function in     net/sctp/sm_make_chunk.c in the SCTP implementation in     the Linux kernel before 3.17.4, when ASCONF is used,     allowed remote attackers to cause a denial of service     (NULL pointer dereference and system crash) via a     malformed INIT chunk (bnc#905100).

  - CVE-2014-8709: The ieee80211_fragment function in     net/mac80211/tx.c in the Linux kernel before 3.13.5 did     not properly maintain a certain tail pointer, which     allowed remote attackers to obtain sensitive cleartext     information by reading packets (bnc#904700).

  - CVE-2013-7263: The Linux kernel before 3.12.4 updated     certain length values before ensuring that associated     data structures have been initialized, which allowed     local users to obtain sensitive information from kernel     stack memory via a (1) recvfrom, (2) recvmmsg, or (3)     recvmsg system call, related to net/ipv4/ping.c,     net/ipv4/raw.c, net/ipv4/udp.c, net/ipv6/raw.c, and     net/ipv6/udp.c (bnc#857643).

  - CVE-2012-6657: The sock_setsockopt function in     net/core/sock.c in the Linux kernel before 3.5.7 did not     ensure that a keepalive action is associated with a     stream socket, which allowed local users to cause a     denial of service (system crash) by leveraging the     ability to create a raw socket (bnc#896779).

  - CVE-2014-3185: Multiple buffer overflows in the     command_port_read_callback function in     drivers/usb/serial/whiteheat.c in the Whiteheat USB     Serial Driver in the Linux kernel before 3.16.2 allowed     physically proximate attackers to execute arbitrary code     or cause a denial of service (memory corruption and     system crash) via a crafted device that provides a large     amount of (1) EHCI or (2) XHCI data associated with a     bulk response (bnc#896391).

  - CVE-2014-3184: The report_fixup functions in the HID     subsystem in the Linux kernel before 3.16.2 might allow     physically proximate attackers to cause a denial of     service (out-of-bounds write) via a crafted device that     provides a small report descriptor, related to (1)     drivers/hid/hid-cherry.c, (2) drivers/hid/hid-kye.c, (3)     drivers/hid/hid-lg.c, (4) drivers/hid/hid-monterey.c,     (5) drivers/hid/hid-petalynx.c, and (6)     drivers/hid/hid-sunplus.c (bnc#896390).

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.

This security upload has been prepared in cooperation of the Debian Kernel, Security and LTS Teams and features the upstream stable release 2.6.32.64 (see https://lkml.org/lkml/2014/11/23/181 for more information for that). It fixes the CVEs described below.

Note: if you are using the openvz flavors, please consider three things: a.) we haven't got any feedback on them (while we have for all other flavors) b.) so do your test before deploying them and c.) once you have done so, please give feedback to debian-lts@lists.debian.org. 

If you are not using openvz flavors, please still consider b+c :-)

CVE-2012-6657

Fix the sock_setsockopt function to prevent local users from being able to cause a denial of service (system crash) attack.

CVE-2013-0228

Fix a XEN priviledge escalation, which allowed guest OS users to gain guest OS priviledges.

CVE-2013-7266

Fix the mISDN_sock_recvmsg function to prevent local users from obtaining sensitive information from kernel memory.

CVE-2014-4157

MIPS platform: prevent local users from bypassing intended PR_SET_SECCOMP restrictions.

CVE-2014-4508

Prevent local users from causing a denial of service (OOPS and system crash) when syscall auditing is enabled .

CVE-2014-4653 CVE-2014-4654 CVE-2014-4655

Fix the ALSA control implementation to prevent local users from causing a denial of service attack and from obtaining sensitive information from kernel memory.

CVE-2014-4943

Fix PPPoL2TP feature to prevent local users to from gaining privileges.

CVE-2014-5077

Prevent remote attackers from causing a denial of service attack involving SCTP.

CVE-2014-5471 CVE-2014-5472

Fix the parse_rock_ridge_inode_internal function to prevent local users from causing a denial of service attack via a crafted iso9660 images.

CVE-2014-9090

Fix the do_double_fault function to prevent local users from causing a denial of service (panic) attack.

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

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2014-3108 advisory.

  - The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a     keepalive action is associated with a stream socket, which allows local users to cause a denial of service     (system crash) by leveraging the ability to create a raw socket. (CVE-2012-6657)

  - Stack consumption vulnerability in the parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the     Linux kernel through 3.16.1 allows local users to cause a denial of service (uncontrolled recursion, and     system crash or reboot) via a crafted iso9660 image with a CL entry referring to a directory entry that     has a CL entry. (CVE-2014-5471)

  - The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel through 3.16.1 allows     local users to cause a denial of service (unkillable mount process) via a crafted iso9660 image with a     self-referential CL entry. (CVE-2014-5472)

  - arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated     with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an     IRET instruction that leads to access to a GS Base address from the wrong space. (CVE-2014-9322)

  - The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not     properly handle faults associated with the Stack Segment (SS) segment register, which allows local users     to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the     linux-clock-tests test suite. (CVE-2014-9090)

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

- A flaw was found in the way the Linux kernel's SCTP     implementation handled malformed or duplicate Address     Configuration Change Chunks (ASCONF). A remote attacker     could use either of these flaws to crash the system.
    (CVE-2014-3673, CVE-2014-3687, Important)

  - A flaw was found in the way the Linux kernel's SCTP     implementation handled the association's output queue. A     remote attacker could send specially crafted packets     that would cause the system to use an excessive amount     of memory, leading to a denial of service.
    (CVE-2014-3688, Important)

  - A stack overflow flaw caused by infinite recursion was     found in the way the Linux kernel's UDF file system     implementation processed indirect ICBs. An attacker with     physical access to the system could use a specially     crafted UDF image to crash the system. (CVE-2014-6410,     Low)

  - It was found that the Linux kernel's networking     implementation did not correctly handle the setting of     the keepalive socket option on raw sockets. A local user     able to create a raw socket could use this flaw to crash     the system. (CVE-2012-6657, Low)

  - It was found that the parse_rock_ridge_inode_internal()     function of the Linux kernel's ISOFS implementation did     not correctly check relocated directories when     processing Rock Ridge child link (CL) tags. An attacker     with physical access to the system could use a specially     crafted ISO image to crash the system or, potentially,     escalate their privileges on the system. (CVE-2014-5471,     CVE-2014-5472, Low)

Bug fixes :

  - This update fixes a race condition issue between the     sock_queue_err_skb function and sk_forward_alloc     handling in the socket error queue (MSG_ERRQUEUE), which     could occasionally cause the kernel, for example when     using PTP, to incorrectly track allocated memory for the     error queue, in which case a traceback would occur in     the system log.

  - The zcrypt device driver did not detect certain crypto     cards and the related domains for crypto adapters on     System z and s390x architectures. Consequently, it was     not possible to run the system on new crypto hardware.
    This update enables toleration mode for such devices so     that the system can make use of newer crypto hardware.

  - After mounting and unmounting an XFS file system several     times consecutively, the umount command occasionally     became unresponsive. This was caused by the     xlog_cil_force_lsn() function that was not waiting for     completion as expected. With this update,     xlog_cil_force_lsn() has been modified to correctly wait     for completion, thus fixing this bug.

  - When using the ixgbe adapter with disabled LRO and the     tx-usec or rs- usec variables set to 0, transmit     interrupts could not be set lower than the default of 8     buffered tx frames. Consequently, a delay of TCP     transfer occurred. The restriction of a minimum of 8     buffered frames has been removed, and the TCP delay no     longer occurs.

  - The offb driver has been updated for the QEMU standard     VGA adapter, fixing an incorrect displaying of colors     issue.

  - Under certain circumstances, when a discovered MTU     expired, the IPv6 connection became unavailable for a     short period of time. This bug has been fixed, and the     connection now works as expected.

  - A low throughput occurred when using the dm-thin driver     to write to unprovisioned or shared chunks for a thin     pool with the chunk size bigger than the max_sectors_kb     variable.

  - Large write workloads on thin LVs could cause the iozone     and smallfile utilities to terminate unexpectedly.

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security 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.

* A flaw was found in the way the Linux kernel handled GS segment register base switching when recovering from a #SS (stack segment) fault on an erroneous return to user space. A local, unprivileged user could use this flaw to escalate their privileges on the system.
(CVE-2014-9322, Important)

* A flaw was found in the way the Linux kernel's SCTP implementation handled malformed or duplicate Address Configuration Change Chunks (ASCONF). A remote attacker could use either of these flaws to crash the system. (CVE-2014-3673, CVE-2014-3687, Important)

* A flaw was found in the way the Linux kernel's SCTP implementation handled the association's output queue. A remote attacker could send specially crafted packets that would cause the system to use an excessive amount of memory, leading to a denial of service.
(CVE-2014-3688, Important)

* A stack overflow flaw caused by infinite recursion was found in the way the Linux kernel's UDF file system implementation processed indirect ICBs. An attacker with physical access to the system could use a specially crafted UDF image to crash the system. (CVE-2014-6410, Low)

* It was found that the Linux kernel's networking implementation did not correctly handle the setting of the keepalive socket option on raw sockets. A local user able to create a raw socket could use this flaw to crash the system. (CVE-2012-6657, Low)

* It was found that the parse_rock_ridge_inode_internal() function of the Linux kernel's ISOFS implementation did not correctly check relocated directories when processing Rock Ridge child link (CL) tags.
An attacker with physical access to the system could use a specially crafted ISO image to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-5471, CVE-2014-5472, Low)

Red Hat would like to thank Andy Lutomirski for reporting CVE-2014-9322. The CVE-2014-3673 issue was discovered by Liu Wei of Red Hat.

Bug fixes :

* This update fixes a race condition issue between the sock_queue_err_skb function and sk_forward_alloc handling in the socket error queue (MSG_ERRQUEUE), which could occasionally cause the kernel, for example when using PTP, to incorrectly track allocated memory for the error queue, in which case a traceback would occur in the system log. (BZ#1155427)

* The zcrypt device driver did not detect certain crypto cards and the related domains for crypto adapters on System z and s390x architectures. Consequently, it was not possible to run the system on new crypto hardware. This update enables toleration mode for such devices so that the system can make use of newer crypto hardware.
(BZ#1158311)

* After mounting and unmounting an XFS file system several times consecutively, the umount command occasionally became unresponsive.
This was caused by the xlog_cil_force_lsn() function that was not waiting for completion as expected. With this update, xlog_cil_force_lsn() has been modified to correctly wait for completion, thus fixing this bug. (BZ#1158325)

* When using the ixgbe adapter with disabled LRO and the tx-usec or rs-usec variables set to 0, transmit interrupts could not be set lower than the default of 8 buffered tx frames. Consequently, a delay of TCP transfer occurred. The restriction of a minimum of 8 buffered frames has been removed, and the TCP delay no longer occurs. (BZ#1158326)

* The offb driver has been updated for the QEMU standard VGA adapter, fixing an incorrect displaying of colors issue. (BZ#1158328)

* Under certain circumstances, when a discovered MTU expired, the IPv6 connection became unavailable for a short period of time. This bug has been fixed, and the connection now works as expected. (BZ#1161418)

* A low throughput occurred when using the dm-thin driver to write to unprovisioned or shared chunks for a thin pool with the chunk size bigger than the max_sectors_kb variable. (BZ#1161420)

* Large write workloads on thin LVs could cause the iozone and smallfile utilities to terminate unexpectedly. (BZ#1161421)

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2014-1997 advisory.

  - The sctp_assoc_lookup_asconf_ack function in net/sctp/associola.c in the SCTP implementation in the Linux     kernel through 3.17.2 allows remote attackers to cause a denial of service (panic) via duplicate ASCONF     chunks that trigger an incorrect uncork within the side-effect interpreter. (CVE-2014-3687)

  - The SCTP implementation in the Linux kernel through 3.17.2 allows remote attackers to cause a denial of     service (system crash) via a malformed ASCONF chunk, related to net/sctp/sm_make_chunk.c and     net/sctp/sm_statefuns.c. (CVE-2014-3673)

  - The SCTP implementation in the Linux kernel before 3.17.4 allows remote attackers to cause a denial of     service (memory consumption) by triggering a large number of chunks in an association's output queue, as     demonstrated by ASCONF probes, related to net/sctp/inqueue.c and net/sctp/sm_statefuns.c. (CVE-2014-3688)

  - The __udf_read_inode function in fs/udf/inode.c in the Linux kernel through 3.16.3 does not restrict the     amount of ICB indirection, which allows physically proximate attackers to cause a denial of service     (infinite loop or stack consumption) via a UDF filesystem with a crafted inode. (CVE-2014-6410)

  - The sock_setsockopt function in net/core/sock.c in the Linux kernel before 3.5.7 does not ensure that a     keepalive action is associated with a stream socket, which allows local users to cause a denial of service     (system crash) by leveraging the ability to create a raw socket. (CVE-2012-6657)

  - Stack consumption vulnerability in the parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the     Linux kernel through 3.16.1 allows local users to cause a denial of service (uncontrolled recursion, and     system crash or reboot) via a crafted iso9660 image with a CL entry referring to a directory entry that     has a CL entry. (CVE-2014-5471)

  - The parse_rock_ridge_inode_internal function in fs/isofs/rock.c in the Linux kernel through 3.16.1 allows     local users to cause a denial of service (unkillable mount process) via a crafted iso9660 image with a     self-referential CL entry. (CVE-2014-5472)

  - arch/x86/kernel/entry_64.S in the Linux kernel before 3.17.5 does not properly handle faults associated     with the Stack Segment (SS) segment register, which allows local users to gain privileges by triggering an     IRET instruction that leads to access to a GS Base address from the wrong space. (CVE-2014-9322)

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

ID	Name	Product	Family	Severity
85097	Oracle Linux 6 : kernel (ELSA-2015-1272)	Nessus	Oracle Linux Local Security Checks	high
83723	SUSE SLES10 Security Update : kernel (SUSE-SU-2015:0812-1)	Nessus	SuSE Local Security Checks	high
83708	SUSE SLES11 Security Update : kernel (SUSE-SU-2015:0652-1)	Nessus	SuSE Local Security Checks	high
82087	Debian DLA-103-1 : linux-2.6 security update	Nessus	Debian Local Security Checks	medium
80158	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2014-3108)	Nessus	Oracle Linux Local Security Checks	high
80099	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20141216)	Nessus	Scientific Linux Local Security Checks	high
80088	CentOS 6 : kernel (CESA-2014:1997)	Nessus	CentOS Local Security Checks	high
80072	RHEL 6 : kernel (RHSA-2014:1997)	Nessus	Red Hat Local Security Checks	high
80070	Oracle Linux 6 : kernel (ELSA-2014-1997)	Nessus	Oracle Linux Local Security Checks	high

Detections

Analytics

CVE-2012-6657

medium

Tenable Plugins

high

high

high

medium

high

high

high

high

high