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AUSCERT External Security Bulletin Redistribution
ESB-2022.5130
Security update for the Linux Kernel
18 October 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Linux Kernel
Publisher: SUSE
Operating System: SUSE
Resolution: Patch/Upgrade
CVE Names: CVE-2022-41218 CVE-2022-3303 CVE-2022-3239
CVE-2022-2503
Original Bulletin:
https://www.suse.com/support/update/announcement/2022/suse-su-20223599-1
Comment: CVSS (Max): 8.4 CVE-2022-41218 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVSS Source: SUSE
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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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.
Description:
The SUSE Linux Enterprise 12 SP3 kernel was updated.
The following security bugs were fixed:
o CVE-2022-3303: Fixed a race condition in the sound subsystem due to
improper locking (bnc#1203769).
o CVE-2022-41218: Fixed an use-after-free caused by refcount races in drivers
/media/dvb-core/dmxdev.c (bnc#1202960).
o 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).
o 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:
o 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:
o SUSE Linux Enterprise Server 12-SP3-BCL:
zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2022-3599=1
Package List:
o 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
o 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:
o https://www.suse.com/security/cve/CVE-2022-2503.html
o https://www.suse.com/security/cve/CVE-2022-3239.html
o https://www.suse.com/security/cve/CVE-2022-3303.html
o https://www.suse.com/security/cve/CVE-2022-41218.html
o https://bugzilla.suse.com/1202677
o https://bugzilla.suse.com/1202960
o https://bugzilla.suse.com/1203552
o https://bugzilla.suse.com/1203769
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