SecuriTricks - CVE-2022-49413

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().

Product(s) Impacted

Product	Versions
Linux kernel	[]

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-416

Use After Free

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

References

https://git.kernel.org/stable/c/2a1077f17169a6059992a0bbdb330e0abad1e6d9

https://git.kernel.org/stable/c/b06691af08b41dfd81052a3362514d9827b44bb1

https://git.kernel.org/stable/c/d9165200c5627a2cf4408eefabdf0058bdf95e1a

https://git.kernel.org/stable/c/da9f3025d595956410ceaab2bea01980d7775948

https://git.kernel.org/stable/c/e8821f45612f2e6d9adb9c6ba0fb4184f57692aa

https://git.kernel.org/stable/c/ea591cd4eb270393810e7be01feb8fde6a34fbbe

CVSS Score

7.8 / 10

CVSS Data - 3.1

Attack Vector: LOCAL
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: HIGH

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

View Vector String

Timeline

Published: Feb. 26, 2025, 7:01 a.m.
Last Modified: Feb. 27, 2025, 7:15 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVE-2022-49413