VULNERABILITY

Amazon Linux AMI: CVE-2022-49413: Security patch for kernel (ALAS-2025-1977)

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Amazon Linux AMI: CVE-2022-49413: Security patch for kernel (ALAS-2025-1977)

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
02/26/2025
Created
05/15/2025
Added
05/13/2025
Modified
05/21/2025

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().

Solution(s)

  • amazon-linux-upgrade-kernel

References

  • ALAS-2025-1977
  • CVE-2022-49413

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