Integer Underflow Affecting kernel-doc package, versions <0:4.18.0-305.34.2.el8_4


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
1% (84th percentile)

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  • Snyk IDSNYK-RHEL8-KERNELDOC-4145374
  • published19 Jan 2022
  • disclosed18 Jan 2022

Introduced: 18 Jan 2022

CVE-2022-0185  (opens in a new tab)
CWE-191  (opens in a new tab)

How to fix?

Upgrade RHEL:8 kernel-doc to version 0:4.18.0-305.34.2.el8_4 or higher.
This issue was patched in RHSA-2022:0186.

NVD Description

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

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

CVSS Scores

version 3.1