{"id":"DEBIAN-CVE-2026-48092","details":"7-Zip is a file archiver with a high compression ratio. Versions 9.34 through 26.00 contain a heap memory disclosure via SquashFS fragment offset integer overflow on 32-bit builds. 32-bit integer overflow in the SquashFS ReadBlock function allows an attacker-controlled node.Offset value to bypass the fragment bounds check, causing memcpy to read heap memory preceding the cache buffer into the extracted file. The vulnerability is exploitable only on 32-bit builds of 7-Zip where size_t is 32 bits, allowing the addition offsetInBlock + blockSize to wrap modulo 2³². On 64-bit builds the addition is promoted to 64 bits and the check correctly rejects the input. Version 26.01 patches the issue.","modified":"2026-09-14T17:03:16.727844140Z","published":"2026-06-05T15:16:53.380Z","upstream":["CVE-2026-48092"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-48092"}],"affected":[{"package":{"name":"7zip","ecosystem":"Debian:12","purl":"pkg:deb/debian/7zip?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"22.01+really26.01+dfsg-0+deb12u1"}]}],"versions":["22.01+dfsg-10~exp1","22.01+dfsg-8","22.01+dfsg-8+deb12u1","22.01+dfsg-9","22.01+really25.01+dfsg-0+deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48092.json"}},{"package":{"name":"7zip","ecosystem":"Debian:13","purl":"pkg:deb/debian/7zip?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["24.09+dfsg-8","25.00+dfsg-1","25.01+dfsg-1","25.01+dfsg-1~deb13u1","25.01+dfsg-1~deb13u1~bpo12+1","25.01+dfsg-1~deb13u2","25.01+dfsg-2","25.01+dfsg-3","25.01+dfsg-4","25.01+dfsg-5","26.00+dfsg-1","26.00+dfsg-2","26.00+dfsg-3","26.00+dfsg-4","26.00+dfsg-5","26.00+dfsg1-1","26.00+dfsg1-2","26.00+dfsg1-3","26.01+dfsg-1","26.01+dfsg-2","26.01+dfsg-3","26.02+dfsg-1","26.02+dfsg-2","26.02+dfsg-3","26.03+dfsg-1","26.03+dfsg-2","26.03+dfsg-3"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48092.json"}},{"package":{"name":"7zip","ecosystem":"Debian:14","purl":"pkg:deb/debian/7zip?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.01+dfsg-1"}]}],"versions":["24.09+dfsg-8","25.00+dfsg-1","25.01+dfsg-1","25.01+dfsg-1~deb13u1","25.01+dfsg-1~deb13u1~bpo12+1","25.01+dfsg-1~deb13u2","25.01+dfsg-2","25.01+dfsg-3","25.01+dfsg-4","25.01+dfsg-5","26.00+dfsg-1","26.00+dfsg-2","26.00+dfsg-3","26.00+dfsg-4","26.00+dfsg-5","26.00+dfsg1-1","26.00+dfsg1-2","26.00+dfsg1-3"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48092.json"}},{"package":{"name":"p7zip","ecosystem":"Debian:12","purl":"pkg:deb/debian/p7zip?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.02+really26.01+dfsg-0+deb12u1"}]}],"versions":["16.02+dfsg-8","16.02+really25.01+dfsg-0+deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48092.json"}},{"package":{"name":"p7zip","ecosystem":"Debian:13","purl":"pkg:deb/debian/p7zip?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.02+transitional.1"}]}],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-48092.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H"}]}