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SUSE Linux 15 SP4: 2023:4285-1 Important Use-After-Free Fixes

suse
Calendar Grey October 31, 2023
Dist Suse Esm H88
Security is crucial in modern computing, particularly for SUSE distributions. Recent kernel updates address key vulnerabilities affecting system integrity and safety.
* bsc#1212934 * bsc#1214812 * bsc#1215118 * bsc#1215440

Summary

## This update for the Linux Kernel 5.14.21-150400_24_41 fixes several issues. The following security issues were fixed: * CVE-2023-4147: Fixed use-after-free in nf_tables_newrule (bsc#1215118). * 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-2023-4004: Fixed improper element removal netfilter nft_set_pipapo (bsc#1214812). * 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".

Topics%20covered

Topics Covered

security advisory network security privilege escalation kernel patch important fix SUSE Linux use-after-free

References

* bsc#1212934

* bsc#1214812

* bsc#1215118

* bsc#1215440

Cross-

* CVE-2023-3390

* CVE-2023-4004

* CVE-2023-4147

* 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-2023-4004 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-4004 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-4147 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-4147 ( 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:

* openSUSE Leap 15.3

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4285-1
Rating: important

Topics%20covered

Topics Covered

security advisory network security privilege escalation kernel patch important fix SUSE Linux use-after-free

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