Description
In the Linux kernel, the following vulnerability has been resolved:
s390/cio: use generic driver_override infrastructure
When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF.
Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally.
Note that calling match() from __driver_attach() without the device lock held is intentional. [1]
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= ebc3d179150347f3b6d97d8f249378bb2218f95e, < c4295487124f461405e1ef64dfa8c4ab0cb7ebcf; >= ebc3d179150347f3b6d97d8f249378bb2218f95e, < 106d594711e97762788046c5bbb94f580abc4bf4; >= ebc3d179150347f3b6d97d8f249378bb2218f95e, < 2081957d8c323ffb58a10bc64837717ac5a042a1; >= ebc3d179150347f3b6d97d8f249378bb2218f95e, < b660ba045b2b22cf3b4be72773de00cb48f47be5; >= ebc3d179150347f3b6d97d8f249378bb2218f95e, < ac4d8bb6e2e13e8684a76ea48d13ebaaaf5c24c4 |
| Linux | Linux | 5.3 |
References
- https://git.kernel.org/stable/c/106d594711e97762788046c5bbb94f580abc4bf4Patch
- https://git.kernel.org/stable/c/2081957d8c323ffb58a10bc64837717ac5a042a1Patch
- https://git.kernel.org/stable/c/ac4d8bb6e2e13e8684a76ea48d13ebaaaf5c24c4Patch
- https://git.kernel.org/stable/c/b660ba045b2b22cf3b4be72773de00cb48f47be5Patch
- https://git.kernel.org/stable/c/c4295487124f461405e1ef64dfa8c4ab0cb7ebcfPatch
Timeline
- Published
- Jun 24, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Analyzed