{"id":"UBUNTU-CVE-2026-117555","details":"CImg through 4.0.6 contains a heap out-of-bounds read vulnerability in the _load_bmp() function of CImg.h caused by an integer overflow in the row byte count. Attackers can supply a crafted BMP file with a large header width that wraps dx_bytes, causing crashes or heap memory disclosure into the decoded image.","modified":"2026-10-28T20:17:46.248149071Z","published":"2026-10-27T14:16:00Z","upstream":["CVE-2026-117555"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-117555"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-117555"},{"type":"REPORT","url":"https://github.com/GreycLab/CImg"},{"type":"REPORT","url":"https://github.com/GreycLab/CImg/blob/v.4.0.6/CImg.h#L55659"},{"type":"REPORT","url":"https://github.com/GreycLab/CImg/commit/b9ed613d9984f9caa1617b97e1db7e429cf14fd5"},{"type":"REPORT","url":"https://github.com/GreycLab/CImg/issues/495"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/greyclab-cimg-through-4.0.6-heap-out-of-bounds-read-via-integer-overflow-in-load-bmp"}],"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-2026-117555.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-2026-117555.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-2026-117555.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-2026-117555.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-2026-117555.json"}},{"package":{"name":"cimg","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/cimg?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.2+dfsg-1build1","3.5.2+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.5.2+dfsg-2","binary_name":"cimg-examples"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-117555.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-2026-117555.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}