{"id":"DEBIAN-CVE-2026-0799","details":"In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value.  In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.","modified":"2026-09-14T05:00:09.087843929Z","published":"2026-09-05T19:16:55.320Z","upstream":["CVE-2026-0799"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-0799"}],"affected":[{"package":{"name":"libpcap","ecosystem":"Debian:12","purl":"pkg:deb/debian/libpcap?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.3-1","1.10.4-1","1.10.4-2","1.10.4-3","1.10.4-4","1.10.4-4.1","1.10.4-4.1~exp1","1.10.4-5","1.10.4-5+hurd.1","1.10.5-1","1.10.5-2","1.10.6-1","1.10.6-2","1.10.7-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json"}},{"package":{"name":"libpcap","ecosystem":"Debian:13","purl":"pkg:deb/debian/libpcap?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.5-2","1.10.6-1","1.10.6-2","1.10.7-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json"}},{"package":{"name":"libpcap","ecosystem":"Debian:14","purl":"pkg:deb/debian/libpcap?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.10.7-1"}]}],"versions":["1.10.5-2","1.10.6-1","1.10.6-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H"}]}