CVE-2026-49412
FreeBSD FreeBSD, freebsd 취약점
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.
- 대응 우선순위
- 점검
- CVSS
- 7.8
- EPSS
- 0.10% 백분위 1.21% · 2026.08.02 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.06.27