In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in gfs2_glock_shrink_scan The GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to remove the glock from the lru list in __gfs2_glock_put(). On the shrink scan path, the same flag is cleared under lru_lock but because of cond_resched_lock(&lru_lock) in gfs2_dispose_glock_lru(), progress on the put side can be made without deleting the glock from the lru list. Keep GLF_LRU across the race window opened by cond_resched_lock(&lru_lock) to ensure correct behavior on both sides - cle...
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in gfs2_glock_shrink_scan The GLF_LRU flag is checked under lru_lock in gfs2_glock_remove_from_lru() to remove the glock from the lru list in __gfs2_glock_put(). On the shrink scan path, the same flag is cleared under lru_lock but because of cond_resched_lock(&lru_lock) in gfs2_dispose_glock_lru(), progress on the put side can be made without deleting the glock from the lru list. Keep GLF_LRU across the race window opened by cond_resched_lock(&lru_lock) to ensure correct behavior on both sides - cle...
Linux Linux, linux kernel의 현재 전체 버전이 공식 영향 범위(Linux Linux, linux kernel >= 6948c6bc17d666663a84c124b3176039e64a58f4 < 38ce329534500bf4ae71f81df6a37a406cf187b4, >= b568ed385a18c0ddbe41862b69088b636550a04f < 92869945cc5b78ee8a1ef90336fe070893e3458a, >= 762bb3528249604bc680a9df635e8995740176de < 0364742decb0f02bc183404868b82896f7992595, >= bac8520892812dada1ac93f27d96317470d24b1f < 094bf5670e762afa243d2c41a5c4ab71c7447bf4, >= 7881ef3f33bb80f459ea6020d1e021fc524a6348 < 86fd5b27db743a0ce0cc245e3a34813b2aa6ec1d, >= 7881ef3f33bb80f459ea6020d1e021fc524a6348 < a61156314b66456ab6a291ed5deba1ebd002ab3c, >= 7881ef3f33bb80f459ea6020d1e021fc524a6348 < e87ef30fe73e7e10d2c85bdcc778dcec24dca553, >= 7881ef3f33bb80f459ea6020d1e021fc524a6348 < 1ab19c5de4c537ec0d9b21020395a5b5a6c059b2, >= 1e7a416fb765c9072479dc424780c0937ba99270, >= dcbdbe13796ffa561510d2686a6318564e728bbd, >= 4.4.181 < 4.4.274, >= 4.9.180 < 4.9.274, >= 4.14.123 < 4.14.238, >= 4.19.47 < 4.19.196, >= 5.0.20 < 5.1, >= 5.1.6 < 5.2, >= 5.2, >= 5.1.6 < 5.4.127, >= 5.5 < 5.10.45, >= 5.11 < 5.12.12)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
조치방안
구조화된 수정 버전 값(4.4.274, 4.9.274, 4.14.238, 4.19.196, 5.1, 5.4.127, 5.10.45, 5.12.12)은 참고용입니다. 공급사 공식 보안 권고에서 제품·에디션·설치 방식별 수정 기준을 확인한 뒤 적용합니다.
조치 후 확인사항
패치 후 같은 명령으로 전체 버전을 다시 확인해 Linux Linux, linux kernel 4.4.274, 4.9.274, 4.14.238, 4.19.196, 5.1, 5.4.127, 5.10.45, 5.12.12 기준을 충족하는지 확인합니다. 이어서 메모리 손상 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
