CVE-2022-50022
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/09cf99bace7789d91caa8d10fbcfc8b2fb35857fPatch
- https://git.kernel.org/stable/c/104212471b1c1817b311771d817fb692af983173Patch
- https://git.kernel.org/stable/c/5d8325fd15892c8ab1146edc1d7ed8463de39636Patch
- https://git.kernel.org/stable/c/7470a4314b239e9a9580f248fdf4c9a92805490ePatch
- https://git.kernel.org/stable/c/d9b94c3ace549433de8a93eeb27b0391fc8ac406Patch
- https://git.kernel.org/stable/c/e5b3dd2d92c4511e81f6e4ec9c5bb7ad25e03d13Patch
- https://git.kernel.org/stable/c/eb3a4f73f43f839df981dda5859e8e075067a360Patch
- https://git.kernel.org/stable/c/f5d46f1b47f65da1faf468277b261eb78c8e25b5Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.