CVE-2026-80549
Description
In the Linux kernel, the following vulnerability has been resolved: s390/vfio_ccw: Move cp cleanup out of not operational The fsm_notoper() routine is called when the device has been lost, and is (by definition) no longer operational. Since this can happen asynchronously from the normal behavior of the driver, the cleanup may happen when holding other locks in the calling sequence (notably, the cio subchannel lock). Push the cleanup of the private->cp resources to a workqueue, where it can be done out from under that lock sequence and a future patch can safely manage the locking requirements.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/f98a9890ca42f4223d2d4c50e0660af3e012fcb4
- https://git.kernel.org/stable/c/4e3301e2a651d742c05914f6074a25b8e41bce19
- https://git.kernel.org/stable/c/af1759d8e6e6da9ba94f30a2f92546f406899aa7
- https://git.kernel.org/stable/c/56100baa0eb7055b1026dfa73e696e8066ff71fd
- https://git.kernel.org/stable/c/0c11f61a876ed6fcca53d442ed3f33ea8362a0f9
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.