Race Condition Affecting kernel-uek-devel package, versions <0:4.1.12-124.62.3.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.16% (55th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKDEVEL-2807466
  • published4 May 2022
  • disclosed25 Mar 2022

Introduced: 25 Mar 2022

CVE-2021-4203  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-devel to version 0:4.1.12-124.62.3.el7uek or higher.
This issue was patched in ELSA-2022-9348.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle. See How to fix? for Oracle:7 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