CVE-2022-49413

HIGH EPSS 19.1%
Published Feb 26, 20251y ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 26, 2025 1y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
19.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥4.12  –  <5.4.198
linuxlinux_kernel*≥5.5  –  <5.10.121
linuxlinux_kernel*≥5.11  –  <5.15.46
linuxlinux_kernel*≥5.16  –  <5.17.14
linuxlinux_kernel*≥5.18  –  <5.18.3

References 6

  • git.kernel.org https://git.kernel.org/stable/c/2a1077f17169a6059992a0bbdb330e0abad1e6d9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b06691af08b41dfd81052a3362514d9827b44bb1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d9165200c5627a2cf4408eefabdf0058bdf95e1a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da9f3025d595956410ceaab2bea01980d7775948
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e8821f45612f2e6d9adb9c6ba0fb4184f57692aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea591cd4eb270393810e7be01feb8fde6a34fbbe
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2a1077f17169a6059992a0bbdb330e0abad1e6d9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b06691af08b41dfd81052a3362514d9827b44bb1
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d9165200c5627a2cf4408eefabdf0058bdf95e1a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/da9f3025d595956410ceaab2bea01980d7775948
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/e8821f45612f2e6d9adb9c6ba0fb4184f57692aa
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ea591cd4eb270393810e7be01feb8fde6a34fbbe
    Patch