{"id":"DEBIAN-CVE-2026-103242","details":"A heap-based buffer overflow flaw was found in rpm. RPMTAG_FILESIGNATURES in a crafted, unsigned RPM package's main header is declared with the wrong header type, causing hex2binv() to allocate a one-byte buffer and then write the tag's attacker-controlled, hex-decoded content — of attacker-chosen length — past the end of that allocation. This is reachable via rpm2cpio, rpm2archive, and rpm -qlvp on an untrusted package.","modified":"2026-10-01T05:01:09.862483351Z","published":"2026-09-30T12:17:12.653Z","upstream":["CVE-2026-103242"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-103242"}],"affected":[{"package":{"name":"rpm","ecosystem":"Debian:12","purl":"pkg:deb/debian/rpm?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.18.0+dfsg-1","4.18.0+dfsg-1+deb12u1","4.18.2+dfsg-1","4.18.2+dfsg-1.1~exp1","4.18.2+dfsg-2","4.18.2+dfsg-2.1","4.18.2+dfsg-2.1~exp1","4.19.1.1+dfsg-1","4.19.1.1+dfsg-1~exp","4.20.0+dfsg-1","4.20.0+dfsg-2","4.20.0+dfsg-3","4.20.0+dfsg-4","4.20.1+dfsg-1","4.20.1+dfsg-2","4.20.1+dfsg-3","6.0.0-1","6.0.0-2","6.0.1-1","6.1.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103242.json"}},{"package":{"name":"rpm","ecosystem":"Debian:13","purl":"pkg:deb/debian/rpm?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.20.1+dfsg-3","6.0.0-1","6.0.0-2","6.0.1-1","6.1.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103242.json"}},{"package":{"name":"rpm","ecosystem":"Debian:14","purl":"pkg:deb/debian/rpm?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.20.1+dfsg-3","6.0.0-1","6.0.0-2","6.0.1-1","6.1.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-103242.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"}]}