This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--===============9148438761112952371==
Content-Language: en-US
Content-Type: multipart/signed; micalg=pgp-sha256;
 protocol="application/pgp-signature";
 boundary="------------RD2FRxv5Lqw4bLB7g87lZ3yv"

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--------------RD2FRxv5Lqw4bLB7g87lZ3yv
Content-Type: multipart/mixed;
 boundary="------------e0v5baSCQ6QbBaPPfHKA0tlf";
 protected-headers="v1"
From: Bruce Cable <bruce.cable@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <fddaeb67-572a-49ac-84e1-243c0d3a4193@canonical.com>
Subject: [USN-7319-1] cmark-gfm vulnerabilities

--------------e0v5baSCQ6QbBaPPfHKA0tlf
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: base64

==========================================================================
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

--------------e0v5baSCQ6QbBaPPfHKA0tlf--

--------------RD2FRxv5Lqw4bLB7g87lZ3yv
Content-Type: application/pgp-signature; name="OpenPGP_signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="OpenPGP_signature.asc"

-----BEGIN PGP SIGNATURE-----
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=67JB
-----END PGP SIGNATURE-----

--------------RD2FRxv5Lqw4bLB7g87lZ3yv--


--===============9148438761112952371==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

Cg==

--===============9148438761112952371==--