CVE-2022-49413
In the Linux kernel, the following vulnerability has been resolved: bfq: Update cgroup information before merging bio When the process is migrated to a different cgroup (or in case of writeback just starts submitting bios associated with a different…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.29%). 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: bfq: Update cgroup information before merging bio When the process is migrated to a different cgroup (or in case of writeback just starts submitting bios associated with a different cgroup) bfq_merge_bio() can operate with stale cgroup information in bic. Thus the bio can be merged to a request from a different cgroup or it can result in merging of bfqqs for different cgroups or bfqqs of already dead cgroups and causing possible use-after-free issues. Fix the problem by updating cgroup information in bfq_merge_bio().
- 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
- 0.29% probability · 21th 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/2a1077f17169a6059992a0bbdb330e0abad1e6d9Patch
- https://git.kernel.org/stable/c/b06691af08b41dfd81052a3362514d9827b44bb1Patch
- https://git.kernel.org/stable/c/d9165200c5627a2cf4408eefabdf0058bdf95e1aPatch
- https://git.kernel.org/stable/c/da9f3025d595956410ceaab2bea01980d7775948Patch
- https://git.kernel.org/stable/c/e8821f45612f2e6d9adb9c6ba0fb4184f57692aaPatch
- https://git.kernel.org/stable/c/ea591cd4eb270393810e7be01feb8fde6a34fbbePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.