{"id":"CVE-2026-120831","published":"2026-11-03T02:16:53.393","lastModified":"2026-11-03T02:16:53.560","description":"A flaw was found in libslirp in if_output(). When moving a session from the fast queue to the batch queue, the code unlinked and reinserted an arbitrary packet via ifm->m_nextpkt instead of the session queue head, corrupting queue pointers. A guest generating burst traffic could crash the host networking process, causing a denial of service.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-120831","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565425","tags":[]},{"url":"https://gitlab.freedesktop.org/slirp/libslirp/-/commit/bad35bd3b529dc47aa109980a69a36da7848ab76","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}