GHSA-q35c-jr5r-prg7
GitHub Security Advisory
⚠ Unreviewed
HIGH
Has CVE
Advisory Details
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.
Related CVEs
Key Information
7.5
/10
Dataset
Last updated: August 1, 2025 6:44 AM
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