{"id":"UBUNTU-CVE-2022-24724","details":"cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.","modified":"2026-04-22T15:25:21.883284Z","published":"2022-03-03T20:15:00Z","upstream":["CVE-2022-24724"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-24724"},{"type":"REPORT","url":"https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-24724"}],"affected":[{"package":{"name":"cmark-gfm","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/cmark-gfm@0.29.0.gfm.0-4ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.28.3.gfm.20-3","0.29.0.gfm.0-3","0.29.0.gfm.0-4","0.29.0.gfm.0-4ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"cmark-gfm","binary_version":"0.29.0.gfm.0-4ubuntu0.1~esm1"},{"binary_name":"libcmark-gfm-extensions0","binary_version":"0.29.0.gfm.0-4ubuntu0.1~esm1"},{"binary_name":"libcmark-gfm0","binary_version":"0.29.0.gfm.0-4ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-24724.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}