CVE-2026-80549
Published: August 29, 2026Last modified: August 29, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.2 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | HIGH |
| User interaction | NONE |
| Scope | CHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.182-r0) |
| 25 LTS | linux-lts | Vulnerable (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.46-r0) |
References
- https://git.kernel.org/stable/c/0c11f61a876ed6fcca53d442ed3f33ea8362a0f9
- https://git.kernel.org/stable/c/4e3301e2a651d742c05914f6074a25b8e41bce19
- https://git.kernel.org/stable/c/56100baa0eb7055b1026dfa73e696e8066ff71fd
- https://git.kernel.org/stable/c/af1759d8e6e6da9ba94f30a2f92546f406899aa7
- https://git.kernel.org/stable/c/c9b85aa2cf73ea645e55e2c2670e0ddebfe1589b
- https://git.kernel.org/stable/c/f98a9890ca42f4223d2d4c50e0660af3e012fcb4