Description (CNA)
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().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected e21b7a0b988772e82e7147e1c659a5afe2ae003c before da9f3025d595956410ceaab2bea01980d7775948; affected e21b7a0b988772e82e7147e1c659a5afe2ae003c before b06691af08b41dfd81052a3362514d9827b44bb1; affected e21b7a0b988772e82e7147e1c659a5afe2ae003c before e8821f45612f2e6d9adb9c6ba0fb4184f57692aa; affected e21b7a0b988772e82e7147e1c659a5afe2ae003c before d9165200c5627a2cf4408eefabdf0058bdf95e1a; affected e21b7a0b988772e82e7147e1c659a5afe2ae003c before 2a1077f17169a6059992a0bbdb330e0abad1e6d9; affected e21b7a0b988772e82e7147e1c659a5afe2ae003c before ea591cd4eb270393810e7be01feb8fde6a34fbbe |
| Linux / Linux | affected 4.12; unaffected 0 before 4.12; unaffected 5.4.198 through 5.4.*; unaffected 5.10.121 through 5.10.*; unaffected 5.15.46 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/da9f3025d595956410ceaab2bea01980d7775948
- https://git.kernel.org/stable/c/b06691af08b41dfd81052a3362514d9827b44bb1
- https://git.kernel.org/stable/c/e8821f45612f2e6d9adb9c6ba0fb4184f57692aa
- https://git.kernel.org/stable/c/d9165200c5627a2cf4408eefabdf0058bdf95e1a
- https://git.kernel.org/stable/c/2a1077f17169a6059992a0bbdb330e0abad1e6d9
- https://git.kernel.org/stable/c/ea591cd4eb270393810e7be01feb8fde6a34fbbe
ADP enrichment
No English description supplied.
No references supplied.