vulnerability
Red Hat: CVE-2024-38384: kernel: blk-cgroup: fix list corruption from reorder of WRITE ->lqueued (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:L/Au:M/C:N/I:N/A:C) | Jun 24, 2024 | Sep 13, 2024 | Aug 11, 2025 |
Severity
4
CVSS
(AV:L/AC:L/Au:M/C:N/I:N/A:C)
Published
Jun 24, 2024
Added
Sep 13, 2024
Modified
Aug 11, 2025
Description
In the Linux kernel, the following vulnerability has been resolved:
blk-cgroup: fix list corruption from reorder of WRITE ->lqueued
__blkcg_rstat_flush() can be run anytime, especially when blk_cgroup_bio_start
is being executed.
If WRITE of `->lqueued` is re-ordered with READ of 'bisc->lnode.next' in
the loop of __blkcg_rstat_flush(), `next_bisc` can be assigned with one
stat instance being added in blk_cgroup_bio_start(), then the local
list in __blkcg_rstat_flush() could be corrupted.
Fix the issue by adding one barrier.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-kernelredhat-upgrade-kernel-rt
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