Race Condition Affecting kernel-64kb package, versions <5.3.18-150300.59.93.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.16% (54th percentile)

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  • Snyk IDSNYK-SLES153-KERNEL64KB-3023883
  • published15 Sept 2022
  • disclosed14 Sept 2022

Introduced: 14 Sep 2022

CVE-2021-4203  (opens in a new tab)
CWE-362  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade SLES:15.3 kernel-64kb to version 5.3.18-150300.59.93.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64kb package and not the kernel-64kb package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

CVSS Scores

version 3.1