Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2021:14724-1
Rating: important
References: #1056134 #1180963 #1182715 #1182716 #1182717 #1183400 #1183696 #1184120 #1184194 #1184198 #1184208 #1184211 #1184393
Cross-References:CVE-2020-35519 CVE-2020-36322 CVE-2021-20261 CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 CVE-2021-28950 CVE-2021-28972 CVE-2021-29650 CVE-2021-30002 CVE-2021-3483
Affected Products:
  • SUSE Linux Enterprise Server 11-SP4-LTSS
  • SUSE Linux Enterprise Server 11-EXTRA
  • SUSE Linux Enterprise Debuginfo 11-SP4

An update that solves 11 vulnerabilities and has two fixes is now available.

Description:

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.
The following security bugs were fixed:

  • CVE-2021-3483: Fixed a use-after-free in nosy.c (bsc#1184393).
  • CVE-2021-30002: Fixed a memory leak for large arguments in video_usercopy (bsc#1184120).
  • CVE-2021-29650: Fixed an issue where the netfilter subsystem allowed attackers to cause a denial of service (bsc#1184208).
  • CVE-2021-28972: Fixed a user-tolerable buffer overflow when writing a new device name to the driver from userspace, allowing userspace to write data to the kernel stack frame directly (bsc#1184198).
  • CVE-2021-28950: Fixed an infinite loop because a retry loop continually finds the same bad inode (bsc#1184194).
  • CVE-2021-27365: Fixed an issue where an unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message (bsc#1182715).
  • CVE-2021-27364: Fixed an issue where an attacker could craft Netlink messages (bsc#1182717).
  • CVE-2021-27363: Fixed a kernel pointer leak which could have been used to determine the address of the iscsi_transport structure (bsc#1182716).
  • CVE-2021-20261: Fixed a race condition in the implementation of the floppy disk drive controller driver software (bsc#1183400).
  • CVE-2020-36322: Fixed an issue in the FUSE filesystem implementation which could have caused a system crash (bsc#1184211).
  • CVE-2020-35519: Fixed an out-of-bounds memory access was found in x25_bind (bsc#1183696).

The following non-security bugs were fixed:
  • md: md.c: Return -ENODEV when mddev is NULL in rdev_attr_show (bsc#1056134, bsc#1180963).

Special Instructions and Notes:

Please reboot the system after installing this update.

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 Server 11-SP4-LTSS:
    zypper in -t patch slessp4-kernel-source-14724=1
  • SUSE Linux Enterprise Server 11-EXTRA:
    zypper in -t patch slexsp3-kernel-source-14724=1
  • SUSE Linux Enterprise Debuginfo 11-SP4:
    zypper in -t patch dbgsp4-kernel-source-14724=1

Package List:

  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586 ppc64 s390x x86_64):
    • kernel-default-3.0.101-108.126.1
    • kernel-default-base-3.0.101-108.126.1
    • kernel-default-devel-3.0.101-108.126.1
    • kernel-source-3.0.101-108.126.1
    • kernel-syms-3.0.101-108.126.1
    • kernel-trace-3.0.101-108.126.1
    • kernel-trace-base-3.0.101-108.126.1
    • kernel-trace-devel-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586 x86_64):
    • kernel-ec2-3.0.101-108.126.1
    • kernel-ec2-base-3.0.101-108.126.1
    • kernel-ec2-devel-3.0.101-108.126.1
    • kernel-xen-3.0.101-108.126.1
    • kernel-xen-base-3.0.101-108.126.1
    • kernel-xen-devel-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (s390x):
    • kernel-default-man-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (ppc64):
    • kernel-bigmem-3.0.101-108.126.1
    • kernel-bigmem-base-3.0.101-108.126.1
    • kernel-bigmem-devel-3.0.101-108.126.1
    • kernel-ppc64-3.0.101-108.126.1
    • kernel-ppc64-base-3.0.101-108.126.1
    • kernel-ppc64-devel-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-SP4-LTSS (i586):
    • kernel-pae-3.0.101-108.126.1
    • kernel-pae-base-3.0.101-108.126.1
    • kernel-pae-devel-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 ia64 ppc64 s390x x86_64):
    • kernel-default-extra-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586 x86_64):
    • kernel-xen-extra-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-EXTRA (x86_64):
    • kernel-trace-extra-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-EXTRA (ppc64):
    • kernel-ppc64-extra-3.0.101-108.126.1
  • SUSE Linux Enterprise Server 11-EXTRA (i586):
    • kernel-pae-extra-3.0.101-108.126.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ppc64 s390x x86_64):
    • kernel-default-debuginfo-3.0.101-108.126.1
    • kernel-default-debugsource-3.0.101-108.126.1
    • kernel-trace-debuginfo-3.0.101-108.126.1
    • kernel-trace-debugsource-3.0.101-108.126.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 s390x x86_64):
    • kernel-default-devel-debuginfo-3.0.101-108.126.1
    • kernel-trace-devel-debuginfo-3.0.101-108.126.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):
    • kernel-ec2-debuginfo-3.0.101-108.126.1
    • kernel-ec2-debugsource-3.0.101-108.126.1
    • kernel-xen-debuginfo-3.0.101-108.126.1
    • kernel-xen-debugsource-3.0.101-108.126.1
    • kernel-xen-devel-debuginfo-3.0.101-108.126.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (ppc64):
    • kernel-bigmem-debuginfo-3.0.101-108.126.1
    • kernel-bigmem-debugsource-3.0.101-108.126.1
    • kernel-ppc64-debuginfo-3.0.101-108.126.1
    • kernel-ppc64-debugsource-3.0.101-108.126.1
  • SUSE Linux Enterprise Debuginfo 11-SP4 (i586):
    • kernel-pae-debuginfo-3.0.101-108.126.1
    • kernel-pae-debugsource-3.0.101-108.126.1
    • kernel-pae-devel-debuginfo-3.0.101-108.126.1

References: