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SUSE: 2022:3123-1 Important: Linux Kernel Live Patch for SLE 15 SP4

suse
Calendar Grey September 6, 2022
Dist Suse Esm H88
New patch released for the Linux Kernel targeting serious vulnerabilities in SLE 15 SP4, improving overall system safety and performance.
An update that fixes three vulnerabilities is now available

Summary

This update for the Linux Kernel 5.14.21-150400_24_16 fixes several issues. The following security issues were fixed: - CVE-2020-36516: Fixed an off-path attack via mixed IPID assignment method with the hash-based IPID assignment policy to inject data into a victim's TCP session or terminate that session (bsc#1196867). - CVE-2021-39698: Fixed possible memory corruption in aio_poll_complete_work of aio.c, that could have led to local escalation of privilege with no additional execution privileges needed (bsc#1196959). - CVE-2022-36946: Fixed a remote denial of service attack inside nfqnl_mangle in net/netfilter/nfnetlink_queue.c, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative length (bsc#1201941). Patch Instructions:

Topics%20covered

Topics Covered

security advisory denial of service kernel update memory corruption SUSE Linux TCP attack live patching

References

#1196867 #1196959 #1201941

Cross- CVE-2020-36516 CVE-2021-39698 CVE-2022-36946

CVSS scores:

CVE-2020-36516 (NVD) : 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L

CVE-2020-36516 (SUSE): 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

CVE-2021-39698 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2021-39698 (SUSE): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVE-2022-36946 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVE-2022-36946 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:

SUSE Linux Enterprise High Performance Computing 15-SP4

SUSE Linux Enterprise Module for Live Patching 15-SP4

SUSE Linux Enterprise Server 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15-SP4

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2022:3123-1
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service kernel update memory corruption SUSE Linux TCP attack live patching

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