CVE-2023-22484

Publication date 23 January 2023

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to a polynomial time complexity issue in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. This vulnerability has been patched in 0.29.0.gfm.7.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cmark-gfm	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Fixed 0.29.0.gfm.6-6ubuntu0.24.10.1
	24.04 LTS noble	Fixed 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1
	23.10 mantic	Ignored end of life, was needs-triage
	23.04 lunar	Ignored end of life, was needs-triage
	22.10 kinetic	Ignored end of life, was needs-triage
	22.04 LTS jammy	Vulnerable
	20.04 LTS focal	Ignored changes too intrusive
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
cmark-gfm	Upstream: f787273

Severity score breakdown

Parameter	Value
Base score	3.5 · Low
Attack vector	Adjacent
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	Low
Vector	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

Related Ubuntu Security Notices (USN)

USN-7319-1
cmark-gfm vulnerabilities
3 March 2025