Security update for the Linux Kernel

SUSE Security Update: Security update for the Linux Kernel
Announcement ID: SUSE-SU-2022:3599-1
Rating: important
References: #1202677 #1202960 #1203552 #1203769
Cross-References:CVE-2022-2503 CVE-2022-3239 CVE-2022-3303 CVE-2022-41218
Affected Products:
  • SUSE Linux Enterprise Server 12-SP3-BCL

An update that fixes four vulnerabilities is now available.


The SUSE Linux Enterprise 12 SP3 kernel was updated.
The following security bugs were fixed:

  • CVE-2022-3303: Fixed a race condition in the sound subsystem due to improper locking (bnc#1203769).
  • CVE-2022-41218: Fixed an use-after-free caused by refcount races in drivers/media/dvb-core/dmxdev.c (bnc#1202960).
  • CVE-2022-3239: Fixed an use-after-free in the video4linux driver that could lead a local user to able to crash the system or escalate their privileges (bnc#1203552).
  • CVE-2022-2503: Fixed a vulnerability that allowed root to bypass LoadPin and load untrusted and unverified kernel modules and firmware (bnc#1202677).

The following non-security bugs were fixed:
  • x86/bugs: Reenable retbleed=off While for older kernels the return thunks are statically built in and cannot be dynamically patched out, retbleed=off should still be possible to do so that the mitigation can still be disabled on Intel who do not use the return thunks but IBRS.

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 12-SP3-BCL:
    zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2022-3599=1

Package List:

  • SUSE Linux Enterprise Server 12-SP3-BCL (x86_64):
    • kernel-default-4.4.180-94.177.1
    • kernel-default-base-4.4.180-94.177.1
    • kernel-default-base-debuginfo-4.4.180-94.177.1
    • kernel-default-debuginfo-4.4.180-94.177.1
    • kernel-default-debugsource-4.4.180-94.177.1
    • kernel-default-devel-4.4.180-94.177.1
    • kernel-syms-4.4.180-94.177.1
  • SUSE Linux Enterprise Server 12-SP3-BCL (noarch):
    • kernel-devel-4.4.180-94.177.1
    • kernel-macros-4.4.180-94.177.1
    • kernel-source-4.4.180-94.177.1