vulnerability
Red Hat: CVE-2024-50081: kernel: blk-mq: setup queue ->tag_set before initializing hctx (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:L/Au:M/C:N/I:N/A:C) | Oct 29, 2024 | May 15, 2025 | May 15, 2025 |
Severity
4
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:C)
Published
Oct 29, 2024
Added
May 15, 2025
Modified
May 15, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
blk-mq: setup queue ->tag_set before initializing hctx
Commit 7b815817aa58 ("blk-mq: add helper for checking if one CPU is mapped to specified hctx")
needs to check queue mapping via tag set in hctx's cpuhp handler.
However, q->tag_set may not be setup yet when the cpuhp handler is
enabled, then kernel oops is triggered.
Fix the issue by setup queue tag_set before initializing hctx.
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt
References
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