{"id":"CVE-2026-58090","title":"The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them","summary":"The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them.  Some error paths would free those messages, leaving freed data mbufs in the receive so…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"freebsd","product":"freebsd","affected":["freebsd = 15.0","freebsd = 15.1"],"published":"2026-08-26","updated":"2026-09-24","sourceUpdated":"2026-09-24T14:01:08.893","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-58090","references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:57.unix.asc","label":"secteam@freebsd.org"}],"tags":["nvd"],"epss":0.00134,"epssPercentile":0.03241,"ingestedAt":"2026-09-24T14:44:21.305Z","slug":"CVE-2026-58090","body":"## Overview\n\nThe SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them.  Some error paths would free those messages, leaving freed data mbufs in the receive socket buffer.\n\nAn unprivileged local user can exploit this use-after-free to escalate privileges.\n\n## Affected\n\n- `freebsd = 15.0`\n- `freebsd = 15.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}