{"id":"DEBIAN-CVE-2026-121942","details":"ZBar through 0.23.95 contains an out-of-bounds read vulnerability in _zbar_sq_decode() in zbar/sqcode.c that allows attackers to read heap memory outside the image buffer via crafted SQ code images. Attackers can supply an image with a skewed SQ code finder pattern near the edge, producing unchecked sample coordinates that crash the decoder and leak bytes into output.","modified":"2026-11-06T20:00:08.655958439Z","published":"2026-11-04T13:17:28.740Z","upstream":["CVE-2026-121942"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-121942"}],"affected":[{"package":{"name":"zbar","ecosystem":"Debian:12","purl":"pkg:deb/debian/zbar?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.23.92-7","0.23.92-7+deb12u1","0.23.92-8","0.23.92-9","0.23.93-1","0.23.93-1.1","0.23.93-1.1~exp1","0.23.93-10","0.23.93-2","0.23.93-3","0.23.93-4","0.23.93-5","0.23.93-6","0.23.93-7","0.23.93-8","0.23.93-9","0.23.95-1","0.23.95-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121942.json"}},{"package":{"name":"zbar","ecosystem":"Debian:13","purl":"pkg:deb/debian/zbar?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.23.93-10","0.23.93-8","0.23.93-9","0.23.95-1","0.23.95-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121942.json"}},{"package":{"name":"zbar","ecosystem":"Debian:14","purl":"pkg:deb/debian/zbar?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.23.93-10","0.23.93-8","0.23.93-9","0.23.95-1","0.23.95-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121942.json"}}],"schema_version":"1.9.2","severity":[{"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}