Race Condition Affecting kernel-uek-firmware package, versions <0:4.1.12-124.66.3.el6uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.06% (26th percentile)

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  • Snyk IDSNYK-ORACLE6-KERNELUEKFIRMWARE-3017814
  • published7 Sept 2022
  • disclosed21 Jul 2022

Introduced: 21 Jul 2022

CVE-2020-36557  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Oracle:6 kernel-uek-firmware to version 0:4.1.12-124.66.3.el6uek or higher.
This issue was patched in ELSA-2022-9761.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-firmware package and not the kernel-uek-firmware package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

CVSS Scores

version 3.1