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openSUSE: 2023:4164-1 Important: Linux Kernel RT Privilege Escalation Fix

opensuse
Calendar Grey October 24, 2023
Scroller Opensuse
A significant security patch for the Linux Kernel Real-Time addresses a use-after-free flaw affecting numerous SUSE offerings.
This update for the Linux Kernel 5.14.21-150400_15_53 fixes one issue

Description

This update for the Linux Kernel 5.14.21-150400_15_53 fixes one issue.

The following security issue was fixed:

* CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler

which could be exploited to achieve local privilege escalation

(bsc#1215440).

Topics%20covered

Topics Covered

security advisory privilege escalation kernel important update openSUSE use-after-free 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:

* SUSE Linux Enterprise Live Patching 15-SP4

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2023-4167=1

* openSUSE Leap 15.5

zypper in -t patch SUSE-2023-4164=1

* SUSE Linux Enterprise Live Patching 15-SP5

zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP5-2023-4164=1

Package List

* SUSE Linux Enterprise Live Patching 15-SP4 (x86_64)

* kernel-livepatch-5_14_21-150400_15_53-rt-debuginfo-2-150400.2.1

* kernel-livepatch-SLE15-SP4-RT_Update_13-debugsource-2-150400.2.1

* kernel-livepatch-5_14_21-150400_15_53-rt-2-150400.2.1

* openSUSE Leap 15.5 (x86_64)

* kernel-livepatch-SLE15-SP5-RT_Update_5-debugsource-2-150500.2.1

* kernel-livepatch-5_14_21-150500_13_18-rt-2-150500.2.1

* kernel-livepatch-5_14_21-150500_13_18-rt-debuginfo-2-150500.2.1

* SUSE Linux Enterprise Live Patching 15-SP5 (x86_64)

* kernel-livepatch-SLE15-SP5-RT_Update_5-debugsource-2-150500.2.1

* kernel-livepatch-5_14_21-150500_13_18-rt-2-150500.2.1

* kernel-livepatch-5_14_21-150500_13_18-rt-debuginfo-2-150500.2.1

References

* bsc#1215440

## References:

* https://www.suse.com/security/cve/CVE-2023-4623.html

* https://bugzilla.suse.com/show_bug.cgi?id=1215440

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4164-1
Rating: important

Topics%20covered

Topics Covered

security advisory privilege escalation kernel important update openSUSE use-after-free live patch

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