Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-11042

kernel update [RHEL6.9 2.6.32-696.30.1.el6]

Details

    • Bug
    • Resolution: Fixed
    • Minor
    • Lustre 2.10.5
    • None
    • None
    • 3
    • 9223372036854775807

    Description

      Security Fix(es):

      An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639)

      Note: This issue is present in hardware and cannot be fully fixed via software update. The updated kernel packages provide software side of the mitigation for this hardware issue. To be fully functional, up-to-date CPU microcode applied on the system is required.

      Bug Fix(es):

      Previously, an erroneous code in the x86 kexec system call path caused a memory corruption. As a consequence, the system became unresponsive with the following kernel stack trace:
      'WARNING: CPU: 13 PID: 36409 at lib/list_debug.c:59 __list_del_entry+0xa1/0xd0 list_del corruption. prev->next should be ffffdd03fddeeca0, but was (null)'

      This update ensures that the code does not corrupt memory. As a result, the operating system no longer hangs. (BZ#1573176)

      Attachments

        Issue Links

          Activity

            [LU-11042] kernel update [RHEL6.9 2.6.32-696.30.1.el6]
            pjones Peter Jones added a comment -

            Landed for 2.10.5

            pjones Peter Jones added a comment - Landed for 2.10.5

            John L. Hammond (john.hammond@intel.com) merged in patch https://review.whamcloud.com/32512/
            Subject: LU-11042 kernel: kernel update RHEL6.9 [2.6.32-696.30.1.el6]
            Project: fs/lustre-release
            Branch: b2_10
            Current Patch Set:
            Commit: 51d5ff90f225c15e837e59f5090b49170e6191ce

            gerrit Gerrit Updater added a comment - John L. Hammond (john.hammond@intel.com) merged in patch https://review.whamcloud.com/32512/ Subject: LU-11042 kernel: kernel update RHEL6.9 [2.6.32-696.30.1.el6] Project: fs/lustre-release Branch: b2_10 Current Patch Set: Commit: 51d5ff90f225c15e837e59f5090b49170e6191ce

            Bob Glossman (bob.glossman@intel.com) uploaded a new patch: https://review.whamcloud.com/32512
            Subject: LU-11042 kernel: kernel update RHEL6.9 [2.6.32-696.30.1.el6]
            Project: fs/lustre-release
            Branch: b2_10
            Current Patch Set: 1
            Commit: 26c96775c3b48efd9aee9d187c039dc0efc20916

            gerrit Gerrit Updater added a comment - Bob Glossman (bob.glossman@intel.com) uploaded a new patch: https://review.whamcloud.com/32512 Subject: LU-11042 kernel: kernel update RHEL6.9 [2.6.32-696.30.1.el6] Project: fs/lustre-release Branch: b2_10 Current Patch Set: 1 Commit: 26c96775c3b48efd9aee9d187c039dc0efc20916

            People

              bogl Bob Glossman (Inactive)
              bogl Bob Glossman (Inactive)
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: