Security update for the Linux Kernel (Live Patch 18 for SLE 15)

SUSE Security Update: Security update for the Linux Kernel (Live Patch 18 for SLE 15)
Announcement ID: SUSE-SU-2020:3180-1
Rating: important
References: #1175992 #1176012 #1176072 #1176382 #1176896
Cross-References:CVE-2020-0431 CVE-2020-14381 CVE-2020-14386 CVE-2020-24394 CVE-2020-25212
Affected Products:
  • SUSE Linux Enterprise Module for Live Patching 15-SP1
  • SUSE Linux Enterprise Module for Live Patching 15

An update that fixes 5 vulnerabilities is now available.

Description:

This update for the Linux Kernel 4.12.14-150_52 fixes several issues.
The following security issues were fixed:

  • CVE-2020-14381: Fixed a use-after-free in the fast user mutex (futex) wait operation, which could have lead to memory corruption and possibly privilege escalation (bsc#1176011).
  • CVE-2020-0431: In kbd_keycode of keyboard.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. (bsc#1176722)
  • CVE-2020-25212: A TOCTOU mismatch in the NFS client code could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c (bsc#1176381).
  • CVE-2020-14386: Fixed a memory corruption which could have lead to an attacker gaining root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity (bsc#1176069).
  • CVE-2020-24394: The NFS server code can set incorrect permissions on new filesystem objects when the filesystem lacks ACL support. This occurs because the current umask is not considered (bsc#1175518).

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Module for Live Patching 15-SP1:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2020-3173=1 SUSE-SLE-Module-Live-Patching-15-SP1-2020-3174=1 SUSE-SLE-Module-Live-Patching-15-SP1-2020-3175=1 SUSE-SLE-Module-Live-Patching-15-SP1-2020-3176=1 SUSE-SLE-Module-Live-Patching-15-SP1-2020-3177=1
  • SUSE Linux Enterprise Module for Live Patching 15:
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-2020-3179=1 SUSE-SLE-Module-Live-Patching-15-2020-3180=1 SUSE-SLE-Module-Live-Patching-15-2020-3183=1 SUSE-SLE-Module-Live-Patching-15-2020-3185=1

Package List:

  • SUSE Linux Enterprise Module for Live Patching 15-SP1 (ppc64le x86_64):
    • kernel-livepatch-4_12_14-197_26-default-7-2.2
    • kernel-livepatch-4_12_14-197_29-default-7-2.2
    • kernel-livepatch-4_12_14-197_34-default-6-2.2
    • kernel-livepatch-4_12_14-197_37-default-6-2.2
    • kernel-livepatch-4_12_14-197_40-default-5-2.2
  • SUSE Linux Enterprise Module for Live Patching 15 (ppc64le x86_64):
    • kernel-livepatch-4_12_14-150_41-default-7-2.2
    • kernel-livepatch-4_12_14-150_41-default-debuginfo-7-2.2
    • kernel-livepatch-4_12_14-150_47-default-7-2.2
    • kernel-livepatch-4_12_14-150_47-default-debuginfo-7-2.2
    • kernel-livepatch-4_12_14-150_52-default-3-2.2
    • kernel-livepatch-4_12_14-150_52-default-debuginfo-3-2.2
    • kernel-livepatch-4_12_14-150_55-default-3-2.1
    • kernel-livepatch-4_12_14-150_55-default-debuginfo-3-2.1

References: