https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-02T15:45:27.662697+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-49412 CVE-2026-49412 — Use-after-free bug in the IPV6_MSFILTER socket option handler 2026-10-02T15:45:27.678087+00:00

Affected: FreeBSD

The kernel handler for IPV6_MSFILTER dropped a serializing lock in order to copy the source-filter list from userspace, then reacquired the lock. During this window another thread could free the multicast filter structure, leaving the handler with a stale pointer to freed memory.

An unprivileged local user can exploit this use-after-free to escalate privileges.