In the Linux kernel, the following vulnerability has been resolved: drivers:md:fix a potential use-after-free bug In line 2884, "raid5_release_stripe(sh);" drops the reference to sh and may cause sh to be released. However, sh is subsequently used in lines 2886 "if (sh->batch_head && sh != sh->batch_head)". This may result in an use-after-free bug. It can be fixed by moving "raid5_release_stripe(sh);" to the bottom of the function.
In the Linux kernel, the following vulnerability has been resolved: drivers:md:fix a potential use-after-free bug In line 2884, "raid5_release_stripe(sh);" drops the reference to sh and may cause sh to be released. However, sh is subsequently used in lines 2886 "if (sh->batch_head && sh != sh->batch_head)". This may result in an use-after-free bug. It can be fixed by moving "raid5_release_stripe(sh);" to the bottom of the function.
Linux Linux, linux kernel의 현재 전체 버전이 공식 영향 범위(Linux Linux, linux kernel >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < 7470a4314b239e9a9580f248fdf4c9a92805490e, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < 09cf99bace7789d91caa8d10fbcfc8b2fb35857f, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < e5b3dd2d92c4511e81f6e4ec9c5bb7ad25e03d13, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < f5d46f1b47f65da1faf468277b261eb78c8e25b5, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < 5d8325fd15892c8ab1146edc1d7ed8463de39636, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < d9b94c3ace549433de8a93eeb27b0391fc8ac406, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < eb3a4f73f43f839df981dda5859e8e075067a360, >= 59fc630b8b5f9f21c8ce3ba153341c107dce1b0c < 104212471b1c1817b311771d817fb692af983173, >= 4.1, >= 4.1 < 4.9.326, >= 4.10 < 4.14.291, >= 4.15 < 4.19.256, >= 4.20 < 5.4.211, >= 5.5 < 5.10.138, >= 5.11 < 5.15.63, >= 5.16 < 5.19.4)에 포함되는지 확인합니다. OS를 선택하면 해당 OS의 제품·패키지·KB·APAR 확인 명령만 표시됩니다.
조치방안
구조화된 수정 버전 값(4.9.326, 4.14.291, 4.19.256, 5.4.211, 5.10.138, 5.15.63, 5.19.4)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 4.9.326, 4.14.291, 4.19.256, 5.4.211, 5.10.138, 5.15.63, 5.19.4 기준을 충족하는지 확인합니다. 이어서 메모리 손상 관련 오류·공격 흔적이 새로 발생하지 않는지 확인합니다.
