점검 대응높음KEV 미등록
CVE-2026-45251
FreeBSD FreeBSD, freebsd 취약점
A file descriptor can be closed while a thread is blocked in a poll(2) or select(2) call waiting for that descriptor. Because the blocked thread does not hold a reference to the underlying object, this closure may result in the object being freed while the thread remains blocked. In this situation, the kernel must remove the blocked thread from the per-object wait queue prior to freeing the object. In the case of some file descriptor types, the kernel failed to unlink blocked threads from the object before freeing it. When the blocked thread is subsequently woken, it accesses memory that ha...
- 대응 우선순위
- 점검
- CVSS
- 7.8
- EPSS
- 0.17% 백분위 6.70% · 2026.08.02 기준
- CISA KEV
- 미등록
- 조치 기한
- -
- 공개일
- 2026.05.21