CVE-2024-38384
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/714e59b5456e4d6e4295a9968c564abe193f461cPatch
- https://git.kernel.org/stable/c/785298ab6b802afa75089239266b6bbea590809cPatch
- https://git.kernel.org/stable/c/d0aac2363549e12cc79b8e285f13d5a9f42fd08ePatch
- https://git.kernel.org/stable/c/714e59b5456e4d6e4295a9968c564abe193f461cPatch
- https://git.kernel.org/stable/c/785298ab6b802afa75089239266b6bbea590809cPatch
- https://git.kernel.org/stable/c/d0aac2363549e12cc79b8e285f13d5a9f42fd08ePatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.