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SUSE: 2023:4245-1 Important: Local Escalation Risk in Kernel Patch

suse
Calendar Grey October 30, 2023
Dist Suse Esm H88
Urgent security patch for Linux Kernel Live Patch 33 addresses local privilege escalation vulnerabilities. Update immediately!
* bsc#1212934 * bsc#1215440 Cross-References: * CVE-2023-3390

Summary

## This update for the Linux Kernel 5.3.18-150200_24_142 fixes several issues. The following security issues were 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). * CVE-2023-3390: Fixed an use-after-free vulnerability in the netfilter subsystem in net/netfilter/nf_tables_api.c that could allow a local attacker with user access to cause a privilege escalation issue (bsc#1212934). ## 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-SP2

Topics%20covered

Topics Covered

security advisory security update kernel patch important SUSE local escalation 12.10.0

References

* bsc#1212934

* bsc#1215440

Cross-

* CVE-2023-3390

* CVE-2023-4623

CVSS scores:

* CVE-2023-3390 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-3390 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* 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 15 SP2

* SUSE Linux Enterprise Live Patching 15-SP2

* SUSE Linux Enterprise Server 15 SP2

* SUSE Linux Enterprise Server for SAP Applications 15 SP2

An update that solves two vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2023-3390.html

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4245-1
Rating: important

Topics%20covered

Topics Covered

security advisory security update kernel patch important SUSE local escalation 12.10.0

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