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SUSE: 2023:4267-1 Important: Kernel Live Patch for Privilege Escalation

suse
Calendar Grey October 30, 2023
Dist Suse Esm H88
Crucial system patch resolving privilege escalation vulnerabilities in SUSE Linux Kernel for SP4. Apply without delay.
* bsc#1212934 * bsc#1214812 * bsc#1215118 * bsc#1215440

Summary

## This update for the Linux Kernel 5.14.21-150400_24_28 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 software update privilege escalation kernel patch important SUSE live patching

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 15.4

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4267-1
Rating: important

Topics%20covered

Topics Covered

security advisory software update privilege escalation kernel patch important SUSE live patching

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