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SUSE: 2023:4867-1 critical: kernel live patch addressing security flaws

suse
Calendar Grey December 14, 2023
Dist Suse Esm H88
An essential update for the Linux Kernel addresses critical vulnerabilities, enhancing system integrity and performance.
* bsc#1215097 * bsc#1215519 Cross-References: * CVE-2023-2163

Summary

## This update for the Linux Kernel 5.14.21-150500_55_31 fixes several issues. The following security issues were fixed: * CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables component can be exploited to achieve local privilege escalation. (bsc#1215097) * CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape. (bsc#1215519) ## 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: * openSUSE Leap 15.4 zypper in -t patch SUSE-2023-4867=1

Topics%20covered

Topics Covered

security advisory privilege escalation kernel patch critical fix SUSE live patching

References

* bsc#1215097

* bsc#1215519

Cross-

* CVE-2023-2163

* CVE-2023-3777

CVSS scores:

* CVE-2023-2163 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

* CVE-2023-2163 ( NVD ): 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

* CVE-2023-3777 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2023-3777 ( 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

* openSUSE Leap 15.5

* SUSE Linux Enterprise High Performance Computing 15 SP4

* SUSE Linux Enterprise High Performance Computing 15 SP5

* SUSE Linux Enterprise Live Patching 15-SP4

* SUSE Linux Enterprise Live Patching 15-SP5

* SUSE Linux Enterprise Micro 5.3

* SUSE Linux Enterprise Micro 5.4

* SUSE Linux Enterprise Micro 5.5

* SUSE Linux Enterprise Micro 6.0

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2023:4867-1
Rating: important

Topics%20covered

Topics Covered

security advisory privilege escalation kernel patch critical fix SUSE live patching

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