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SUSE-SU-2021:4052-1 Not scored

Security update for the Linux Kernel (Live Patch 41 for SLE 12 SP3)

This update for the Linux Kernel 4.4.180-94_150 fixes several issues. The following security issues were fixed: - CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. (bsc#1192032) - CVE-2021-28688: The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. (bsc#1183646)

Exploit probability Not scored
Published December 14, 2021
Required by Not available
Last source change February 4, 2026

02 / AFFECTED SOFTWARE

Affected packages

SUSE:Linux Enterprise Server 12 SP3-LTSS kgraft-patch-SLE12-SP3_Update_41
SUSE:Linux Enterprise Server for SAP Applications 12 SP3 kgraft-patch-SLE12-SP3_Update_41

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities SUSE-SU-2021:4052-1

This update for the Linux Kernel 4.4.180-94_150 fixes several issues. The following security issues were fixed: - CVE-2021-0935: In ip6_xmit of ip6_output.c, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. (bsc#1192032) - CVE-2021-28688: The fix for XSA-365 includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains. (bsc#1183646)

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05 / REFERENCES

Further evidence