Race Condition Affecting kernel-rt-debug package, versions <0:4.18.0-477.10.1.rt7.274.el8_8


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELRTDEBUG-5558032
  • published4 Jun 2022
  • disclosed9 May 2022

Introduced: 9 May 2022

CVE-2022-1462  (opens in a new tab)
CWE-362  (opens in a new tab)
CWE-366  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-rt-debug to version 0:4.18.0-477.10.1.rt7.274.el8_8 or higher.
This issue was patched in RHSA-2023:2736.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An out-of-bounds read flaw was found in the Linux kernel’s TeleTYpe subsystem. The issue occurs in how a user triggers a race condition using ioctls TIOCSPTLCK and TIOCGPTPEER and TIOCSTI and TCXONC with leakage of memory in the flush_to_ldisc function. This flaw allows a local user to crash the system or read unauthorized random data from memory.

CVSS Scores

version 3.1