{"id":"UBUNTU-CVE-2026-42144","details":"CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM file with large dimension values causes the overflow to wrap around, allocating an undersized buffer and potentially triggering a heap buffer overflow. Any application using CImg to load untrusted image files is affected. This issue has been patched via commit 4ca26bc.","modified":"2026-05-20T16:25:43.426582700Z","published":"2026-05-04T18:16:00Z","upstream":["CVE-2026-42144"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-42144"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-42144"},{"type":"REPORT","url":"https://github.com/GreycLab/CImg/security/advisories/GHSA-4663-63fm-44gc"},{"type":"REPORT","url":"https://github.com/GreycLab/CImg/issues/478"}],"affected":[{"package":{"name":"cimg","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.4+dfsg-1build1","1.6.5+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"1.6.5+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.9+dfsg-2","1.7.9+dfsg-2build1","1.7.9+dfsg-2ubuntu0.18.04.1","1.7.9+dfsg-2ubuntu0.18.04.2","1.7.9+dfsg-2ubuntu0.18.04.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"1.7.9+dfsg-2ubuntu0.18.04.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.5+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"2.4.5+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.9.4+dfsg-2","2.9.4+dfsg-3","2.9.4+dfsg-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"2.9.4+dfsg-3ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.1+dfsg-1","3.2.1+dfsg-1ubuntu0.24.04.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"3.2.1+dfsg-1ubuntu0.24.04.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.2+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"3.5.2+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.2+dfsg-1","3.5.2+dfsg-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"cimg-examples","binary_version":"3.5.2+dfsg-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42144.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H"},{"type":"Ubuntu","score":"medium"}]}