{"id":"DEBIAN-CVE-2025-34457","details":"wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 694c954, contain a stack-based buffer overflow vulnerability in the function kiss_rec_byte() located in src/kiss_frame.c. When processing crafted KISS frames that reach the maximum allowed frame length (MAX_KISS_LEN), the function appends a terminating FEND byte without reserving sufficient space in the stack buffer. This results in an out-of-bounds write followed by an out-of-bounds read during the subsequent call to kiss_unwrap(), leading to stack memory corruption or application crashes. This vulnerability may allow remote unauthenticated attackers to trigger a denial-of-service condition.","modified":"2026-09-01T20:05:46.796203042Z","published":"2025-12-22T22:16:04.493Z","upstream":["CVE-2025-34457"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-34457"}],"affected":[{"package":{"name":"direwolf","ecosystem":"Debian:12","purl":"pkg:deb/debian/direwolf?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6+dfsg-3","1.6+dfsg-4","1.7+dfsg-1","1.7+dfsg-2","1.8.1+dfsg-1","1.8.1+dfsg-2","1.8.1+dfsg-2~bpo13+1","1.8~beta1+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-34457.json"}},{"package":{"name":"direwolf","ecosystem":"Debian:13","purl":"pkg:deb/debian/direwolf?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7+dfsg-2+deb13u1"}]}],"versions":["1.7+dfsg-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-34457.json"}},{"package":{"name":"direwolf","ecosystem":"Debian:14","purl":"pkg:deb/debian/direwolf?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.1+dfsg-2"}]}],"versions":["1.7+dfsg-2","1.8.1+dfsg-1","1.8.1+dfsg-2~bpo13+1","1.8~beta1+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-34457.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/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"}]}