CVE-2022-49413 Details
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().
A vulnerability in the Linux kernel's BFQ (Budget Fair Queueing) I/O scheduler has been addressed. The issue arose when processes were migrated to different cgroups, leading to the potential for stale cgroup information to be used in the bio merging process. This could result in bios being incorrectly merged across different cgroups or cause merging of bfqqs (BFQ queues) from already terminated cgroups, potentially leading to use-after-free vulnerabilities. The issue has been fixed by ensuring that cgroup information is updated before merging bios.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Feb 27, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/2a1077f17169a6059992a0bbdb330e0abad1e6d9 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b06691af08b41dfd81052a3362514d9827b44bb1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d9165200c5627a2cf4408eefabdf0058bdf95e1a | kernel.org | Patch |
| https://git.kernel.org/stable/c/da9f3025d595956410ceaab2bea01980d7775948 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e8821f45612f2e6d9adb9c6ba0fb4184f57692aa | kernel.org | Patch |
| https://git.kernel.org/stable/c/ea591cd4eb270393810e7be01feb8fde6a34fbbe | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.12, < 5.4.198 >= 5.5, < 5.10.121 >= 5.11, < 5.15.46 >= 5.16, < 5.17.14 >= 5.18, < 5.18.3 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 24, 2025 | Initial Analysis | [email protected] |
| Feb 27, 2025 | CVE Modified | CISA-ADP |
| Feb 26, 2025 | New CVE Received | kernel.org |