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openSUSE: 2023:4871-1 Important Local Privilege Escalation Fix

opensuse
Calendar Grey December 14, 2023
Dist Opensuse Esm H88
Important security patch for openSUSE kernel tackling potential privilege elevation threats and weaknesses.
This update for the Linux Kernel 5.3.18-150300_59_106 fixes several issues

Description

This update for the Linux Kernel 5.3.18-150300_59_106 fixes several issues.

The following security issues were fixed:

* CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables

component can be exploited to achieve local privilege escalation.

(bsc#1215097)

* CVE-2023-4622: Fixed a use-after-free vulnerability in the Unix domain

sockets component which could be exploited to achieve local privilege

escalation (bsc#1215442).

* CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to

unsafe code paths being incorrectly marked as safe, resulting in arbitrary

read/write in kernel memory, lateral privilege escalation, and container

escape. (bsc#1215519)

Topics%20covered

Topics Covered

security advisory kernel update local privilege escalation important SUSE openSUSE live patch

Patch

## 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-2023-4871=1

* SUSE Linux Enterprise Live Patching 15-SP3

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP3-2023-4871=1

Package List

* openSUSE Leap 15.3 (ppc64le s390x x86_64)

* kernel-livepatch-SLE15-SP3_Update_27-debugsource-11-150300.2.2

* kernel-livepatch-5_3_18-150300_59_106-default-11-150300.2.2

* kernel-livepatch-5_3_18-150300_59_106-default-debuginfo-11-150300.2.2

* openSUSE Leap 15.3 (x86_64)

* kernel-livepatch-5_3_18-150300_59_106-preempt-debuginfo-11-150300.2.2

* kernel-livepatch-5_3_18-150300_59_106-preempt-11-150300.2.2

* SUSE Linux Enterprise Live Patching 15-SP3 (ppc64le s390x x86_64)

* kernel-livepatch-5_3_18-150300_59_106-default-11-150300.2.2

References

* bsc#1215097

* bsc#1215442

* bsc#1215519

## References:

* https://www.suse.com/security/cve/CVE-2023-2163.html

* https://www.suse.com/security/cve/CVE-2023-3777.html

* https://www.suse.com/security/cve/CVE-2023-4622.html

* https://bugzilla.suse.com/show_bug.cgi?id=1215097

* https://bugzilla.suse.com/show_bug.cgi?id=1215442

* https://bugzilla.suse.com/show_bug.cgi?id=1215519

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4871-1
Rating: important

Topics%20covered

Topics Covered

security advisory kernel update local privilege escalation important SUSE openSUSE live patch

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