CVE-2022-49413

HighCVSS 7.8/10Last modified Jun 17, 2026

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().

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

VendorProductVersions
LinuxLinux>= e21b7a0b988772e82e7147e1c659a5afe2ae003c, < da9f3025d595956410ceaab2bea01980d7775948; >= e21b7a0b988772e82e7147e1c659a5afe2ae003c, < b06691af08b41dfd81052a3362514d9827b44bb1; >= e21b7a0b988772e82e7147e1c659a5afe2ae003c, < e8821f45612f2e6d9adb9c6ba0fb4184f57692aa; >= e21b7a0b988772e82e7147e1c659a5afe2ae003c, < d9165200c5627a2cf4408eefabdf0058bdf95e1a; >= e21b7a0b988772e82e7147e1c659a5afe2ae003c, < 2a1077f17169a6059992a0bbdb330e0abad1e6d9; >= e21b7a0b988772e82e7147e1c659a5afe2ae003c, < ea591cd4eb270393810e7be01feb8fde6a34fbbe
LinuxLinux4.12

References

Timeline

Published
Feb 26, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2022-49413: High severity, CVSS 7.8 | Vulnix