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SUSE: 2022:1194-1 Important: Kernel Buffer Overflow And Escalation

suse
Calendar Grey April 14, 2022
Dist Suse Esm H88
Essential SUSE patch rectifies several kernel vulnerabilities to enhance overall system safety and reliability.
An update that fixes three vulnerabilities is now available

Summary

This update for the Linux Kernel 5.3.18-24_78 fixes several issues. The following security issues were fixed: - CVE-2022-27666: Fixed a buffer overflow vulnerability in IPsec ESP transformation code. This flaw allowed a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation. (bnc#1197462) - CVE-2021-39698: Fixed a possible memory corruption due to a use after free in aio_poll_complete_work. This could lead to local escalation of privilege with no additional execution privileges needed. (bsc#1196956) - CVE-2022-22942: Fixed stale file descriptors on failed usercopy. (bsc#1195065) Patch Instructions: To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Topics%20covered

Topics Covered

security advisory buffer overflow kernel patch important local escalation SUSE Linux

References

#1195951 #1196959 #1197133

Cross- CVE-2021-39698 CVE-2022-22942 CVE-2022-27666

CVSS scores:

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-2022-22942 (SUSE): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2022-27666 (NVD) : 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVE-2022-27666 (SUSE): 7.7 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Products:

SUSE Linux Enterprise High Performance Computing 15-SP2

SUSE Linux Enterprise Module for Live Patching 15-SP2

SUSE Linux Enterprise Server 15-SP2

SUSE Linux Enterprise Server for SAP Applications 15-SP2

https://www.suse.com/security/cve/CVE-2021-39698.html

Severity
important
Lowest
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Critical

Announcement ID: SUSE-SU-2022:1194-1
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow kernel patch important local escalation SUSE Linux

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