drivers:md:fix a potential use-after-free bug
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/09cf99bace7789d91caa8d10fbcfc8b2fb35857f
- https://git.kernel.org/stable/c/104212471b1c1817b311771d817fb692af983173
- https://git.kernel.org/stable/c/5d8325fd15892c8ab1146edc1d7ed8463de39636
- https://git.kernel.org/stable/c/7470a4314b239e9a9580f248fdf4c9a92805490e
- https://git.kernel.org/stable/c/d9b94c3ace549433de8a93eeb27b0391fc8ac406
- https://git.kernel.org/stable/c/e5b3dd2d92c4511e81f6e4ec9c5bb7ad25e03d13
- https://git.kernel.org/stable/c/eb3a4f73f43f839df981dda5859e8e075067a360
- https://git.kernel.org/stable/c/f5d46f1b47f65da1faf468277b261eb78c8e25b5
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50022.json
- https://nvd.nist.gov/vuln/detail/CVE-2022-50022