[LU-9148] kernel update [RHEL6.8 2.6.32-642.15.1.el6]

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Severity: 3
• Assignee: Bob Glossman (Inactive)
• Reporter: Bob Glossman (Inactive)

Description

Security Fix(es):

• When creating audit records for parameters to executed children processes, an
  attacker can convince the Linux kernel audit subsystem can create corrupt
  records which may allow an attacker to misrepresent or evade logging of
  executing commands. (CVE-2016-6136, Moderate)

• A flaw was found in the Linux kernel's implementation of the SCTP protocol. A
  remote attacker could trigger an out-of-bounds read with an offset of up to 64kB
  potentially causing the system to crash. (CVE-2016-9555, Moderate)

Bug Fix(es):

• The qlnic driver previously attempted to fetch pending transmission
  descriptors before all writes were complete, which lead to firmware hangs. With
  this update, the qlcnic driver has been fixed to complete all writes before the
  hardware fetches any pending transmission descriptors. As a result, the firmware
  no longer hangs with the qlcnic driver. (BZ#1403143)

• Previously, when a NFS share was mounted, the file-system (FS) cache was
  incorrectly enabled even when the "-o fsc" option was not used in the mount
  command. Consequently, the cachefilesd service stored files in the NFS share
  even when not instructed to by the user. With this update, NFS does not use the
  FS cache if not instructed by the "-o fsc" option. As a result, NFS no longer
  enables caching if the "-o fsc" option is not used. (BZ#1399172)

• Previously, an NFS client and NFS server got into a NFS4 protocol loop
  involving a WRITE action and a NFS4ERR_EXPIRED response when the current_fileid
  counter got to the wraparound point by overflowing the value of 32 bits. This
  update fixes the NFS server to handle the current_fileid wraparound. As a
  result, the described NFS4 protocol loop no longer occurs. (BZ#1399174)

• Previously, certain configurations of the Hewlett Packard Smart Array (HPSA)
  devices caused hardware to be set offline incorrectly when the HPSA driver was
  expected to wait for existing I/O operations to complete. Consequently, a kernel
  panic occurred. This update prevents the described problem. As a result, the
  kernel panic no longer occurs. (BZ#1399175)

• Previously, memory corruption by copying data into the wrong memory locations
  sometimes occurred, because the __copy_tofrom_user() function was returning
  incorrect values. This update fixes the __copy_tofrom_user() function so that it
  no longer returns larger values than the number of bytes it was asked to copy.
  As a result, memory corruption no longer occurs in he described scenario.
  (BZ#1398185)

• Previously, guest virtual machines (VMs) on a Hyper-V server cluster got in
  some cases rebooted during the graceful node failover test, because the host
  kept sending heartbeat packets independently of guests responding to them. This
  update fixes the bug by properly responding to all the heartbeat messages in the
  queue, even if they are pending. As a result, guest VMs no longer get rebooted
  under the described circumstances. (BZ#1397739)

• When the "punching hole" feature of the fallocate utility was used on an ext4
  file system inode with extent depth of 1, the extent tree of the inode sometimes
  became corrupted. With this update, the underlying source code has been fixed,
  and extent tree corruption no longer occurs in the described situation.
  (BZ#1397808)

Bugs fixed (https://bugzilla.redhat.com/):

1353533 - CVE-2016-6136 kernel: Race condition vulnerability in execve argv arguments
1397930 - CVE-2016-9555 kernel: Slab out-of-bounds access in sctp_sf_ootb()

Issue Links

• is duplicated by: LU-2586 Need a way to request "good to have" lock bits
• is related to: LU-9144 kernel update [RHEL6.8 2.6.32-642.13.2.el6]

Comments

[Peter Jones]

Landed for 2.10

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/25633/
Subject: LU-9148 kernel: kernel update RHEL6.8 [2.6.32-642.15.1.el6]
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: a168a6c1d5a7ba6322a8f7ecc3fbb3ffb855c80a

[Oleg Drokin]

this one does not look like it fies anything critical security-wise.

[Gerrit Updater]

Bob Glossman ([e-mail]) uploaded a new patch: https://review.whamcloud.com/25633
Subject: LU-9148 kernel: kernel update RHEL6.8 [2.6.32-642.15.1.el6]
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: a913a5dc09aac4854146d0553e275db7f901592a