Security update for the Linux Kernel

Announcement ID: SUSE-SU-2021:2409-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2021-22555 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-22555 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-33909 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2021-33909 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • openSUSE Leap 15.3
  • Public Cloud Module 15-SP3
  • SUSE Linux Enterprise High Performance Computing 15 SP3
  • SUSE Linux Enterprise Server 15 SP3
  • SUSE Linux Enterprise Server for SAP Applications 15 SP3
  • SUSE Manager Proxy 4.2
  • SUSE Manager Retail Branch Server 4.2
  • SUSE Manager Server 4.2

An update that solves two vulnerabilities and has six security fixes can now be installed.

Description:

The SUSE Linux Enterprise 15 SP3 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2021-22555: A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c (bnc#1188116 ).
  • CVE-2021-33909: Fixed an out-of-bounds write in the filesystem layer that allows to obtain full root privileges (bsc#1188062).

The following non-security bugs were fixed:

  • ceph: must hold snap_rwsem when filling inode for async create (bsc#1187927).
  • cgroup1: do not allow '\n' in renaming (bsc#1187972).
  • qla2xxx: synchronize rport dev_loss_tmo setting (bsc#1182470 bsc#1185486).
  • scsi: ufs: ufshcd-pltfrm depends on HAS_IOMEM (bsc#1187980).
  • usb: dwc3: Fix debugfs creation flow (git-fixes).
  • x86/pkru: Write hardware init value to PKRU when xstate is init (bsc#1152489).
  • x86/process: Check PF_KTHREAD and not current->mm for kernel threads (bsc#1152489).

Special Instructions and Notes:

  • Please reboot the system after installing this update.

Patch Instructions:

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

  • openSUSE Leap 15.3
    zypper in -t patch SUSE-2021-2409=1
  • Public Cloud Module 15-SP3
    zypper in -t patch SUSE-SLE-Module-Public-Cloud-15-SP3-2021-2409=1

Package List:

  • openSUSE Leap 15.3 (x86_64)
    • kselftests-kmp-azure-5.3.18-38.14.1
    • cluster-md-kmp-azure-5.3.18-38.14.1
    • dlm-kmp-azure-5.3.18-38.14.1
    • kselftests-kmp-azure-debuginfo-5.3.18-38.14.1
    • kernel-azure-extra-5.3.18-38.14.1
    • ocfs2-kmp-azure-5.3.18-38.14.1
    • dlm-kmp-azure-debuginfo-5.3.18-38.14.1
    • kernel-azure-debuginfo-5.3.18-38.14.1
    • cluster-md-kmp-azure-debuginfo-5.3.18-38.14.1
    • reiserfs-kmp-azure-debuginfo-5.3.18-38.14.1
    • gfs2-kmp-azure-5.3.18-38.14.1
    • ocfs2-kmp-azure-debuginfo-5.3.18-38.14.1
    • kernel-azure-debugsource-5.3.18-38.14.1
    • kernel-azure-devel-debuginfo-5.3.18-38.14.1
    • reiserfs-kmp-azure-5.3.18-38.14.1
    • kernel-azure-devel-5.3.18-38.14.1
    • kernel-azure-optional-5.3.18-38.14.1
    • kernel-azure-livepatch-devel-5.3.18-38.14.1
    • kernel-azure-optional-debuginfo-5.3.18-38.14.1
    • gfs2-kmp-azure-debuginfo-5.3.18-38.14.1
    • kernel-syms-azure-5.3.18-38.14.1
    • kernel-azure-extra-debuginfo-5.3.18-38.14.1
  • openSUSE Leap 15.3 (nosrc x86_64)
    • kernel-azure-5.3.18-38.14.1
  • openSUSE Leap 15.3 (noarch)
    • kernel-devel-azure-5.3.18-38.14.1
    • kernel-source-azure-5.3.18-38.14.1
  • Public Cloud Module 15-SP3 (nosrc x86_64)
    • kernel-azure-5.3.18-38.14.1
  • Public Cloud Module 15-SP3 (x86_64)
    • kernel-azure-debugsource-5.3.18-38.14.1
    • kernel-azure-devel-debuginfo-5.3.18-38.14.1
    • kernel-syms-azure-5.3.18-38.14.1
    • kernel-azure-devel-5.3.18-38.14.1
    • kernel-azure-debuginfo-5.3.18-38.14.1
  • Public Cloud Module 15-SP3 (noarch)
    • kernel-devel-azure-5.3.18-38.14.1
    • kernel-source-azure-5.3.18-38.14.1

References: