🛡️ CVE-2022-49411
🟠 CVSS 7.8 — High ✅ No Known Exploit CWE-416 NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

In the Linux kernel, the following vulnerability has been resolved: bfq: Make sure bfqg for which we are queueing requests is online Bios queued into BFQ IO scheduler can be associated with a cgroup that was already offlined. This may then cause insertion of this bfq_group into a service tree. But this bfq_group will get freed as soon as last bio associated with it is completed leading to use after free issues for service tree users. Fix the problem by making sure we always operate on online bfq_group. If the bfq_group associated with the bio is not online, we pick the first online parent.

Details

Severity HIGH
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-416
Public Exploit ✅ No
Source NVD
Published 2025-02-26
Updated 2026-06-08
Modified 2025-03-25

Affected Packages

Software From version Fixed in
linux-kernel 5.18 5.18.3

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