==========================================================================
Ubuntu Security Notice USN-7319-1
March 03, 2025

cmark-gfm vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in cmark-gfm.

Software Description:
- cmark-gfm: CommonMark parsing and rendering program, GitHub flavor

Details:

It was discovered that cmark-gfm's autolink extension did not correctly
handle parsing large inputs. An attacker could possibly use this issue
to cause a denial of service. This issue only affected Ubuntu 20.04 LTS
and Ubuntu 22.04 LTS. (CVE-2022-39209)

It was discovered that cmark-gfm did not correctly handle parsing large
inputs. An attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and
Ubuntu 24.10. (CVE-2023-22483)

It was discovered that cmark-gfm did not correctly handle parsing large
inputs. An attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10.
(CVE-2023-22484)

It was discovered that cmark-gfm did not correctly handle parsing large
inputs. An attacker could possibly use this issue to cause a denial of
service. (CVE-2023-22486, CVE-2023-26485)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
  cmark-gfm                       0.29.0.gfm.6-6ubuntu0.24.10.1

Ubuntu 24.04 LTS
  cmark-gfm 0.29.0.gfm.6-6ubuntu0.24.04.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  cmark-gfm                       0.29.0.gfm.3-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  cmark-gfm                       0.29.0.gfm.0-4ubuntu0.1~esm1
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7319-1
  CVE-2022-39209, CVE-2023-22483, CVE-2023-22484, CVE-2023-22486,
  CVE-2023-26485

Package Information:
https://launchpad.net/ubuntu/+source/cmark-gfm/0.29.0.gfm.6-6ubuntu0.24.10.1