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 CVSS scores: CVE-2022-2503 (NVD) : 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2022-2503 (SUSE): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2022-3239 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2022-3239 (SUSE): 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H CVE-2022-3303 (NVD) : 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2022-3303 (SUSE): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2022-41218 (NVD) : 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2022-41218 (SUSE): 8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected Products: SUSE Linux Enterprise Server 12-SP3-BCL ______________________________________________________________________________ An update that fixes four vulnerabilities is now available. Description: 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 References: https://www.suse.com/security/cve/CVE-2022-2503.html https://www.suse.com/security/cve/CVE-2022-3239.html https://www.suse.com/security/cve/CVE-2022-3303.html https://www.suse.com/security/cve/CVE-2022-41218.html https://bugzilla.suse.com/1202677 https://bugzilla.suse.com/1202960 https://bugzilla.suse.com/1203552 https://bugzilla.suse.com/1203769