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SUSE: 2023:4300-1 Critical: Kernel Live Patch 39 Local Escalation

suse
Calendar Grey October 31, 2023
Dist Suse Esm H88
An essential security patch from SUSE addresses a local privilege escalation vulnerability in the Linux Kernel within Live Patch version 39.
* bsc#1215440 Cross-References: * CVE-2023-4623

Summary

## This update for the Linux Kernel 4.12.14-122_147 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). ## 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 12-SP5 zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2023-4300=1 SUSE-SLE-Live- Patching-12-SP5-2023-4298=1 SUSE-SLE-Live-Patching-12-SP5-2023-4299=1 * SUSE Linux Enterprise Live Patching 15-SP1 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP1-2023-4305=1 ## Package List:

Topics%20covered

Topics Covered

security advisory critical SUSE local escalation use-after-free kernel patching SLES

References

* bsc#1215440

Cross-

* CVE-2023-4623

CVSS scores:

* CVE-2023-4623 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-4623 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:

* SUSE Linux Enterprise High Performance Computing 12 SP5

* SUSE Linux Enterprise High Performance Computing 15 SP1

* SUSE Linux Enterprise Live Patching 15-SP1

* SUSE Linux Enterprise Live Patching 12-SP5

* SUSE Linux Enterprise Server 12 SP5

* SUSE Linux Enterprise Server 15 SP1

* SUSE Linux Enterprise Server for SAP Applications 12 SP5

* SUSE Linux Enterprise Server for SAP Applications 15 SP1

An update that solves one vulnerability can now be installed.

##

* 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-2023:4300-1
Rating: important

Topics%20covered

Topics Covered

security advisory critical SUSE local escalation use-after-free kernel patching SLES

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