CVE-2026-53117

s390/cio: use generic driver_override infrastructure

HIGH

7.8

CVSS Score

Published: June 24, 2026 at 04:30 PM UTC

Updated: July 23, 2026 at 09:41 PM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

HIGH7.8

Exploit prediction

EPSS 0.2%

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]

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.3 ≤ v < 6.12.915.3 ≤ v < 6.18.335.3 ≤ v < 6.6.1415.3 ≤ v < 7.0.105.3 ≤ v < 7.16.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.7 ≤ v < 6.12.915.3ebc3d179150347f3b6d97d8f249378bb2218f95e

Vendor states this is fixed in 106d594711e97762788046c5bbb94f580abc4bf4 (fixed)

Vendor states this is fixed in 2081957d8c323ffb58a10bc64837717ac5a042a1 (fixed)

Vendor states this is fixed in ac4d8bb6e2e13e8684a76ea48d13ebaaaf5c24c4 (fixed)

Vendor states this is fixed in b660ba045b2b22cf3b4be72773de00cb48f47be5 (fixed)

Vendor states this is fixed in c4295487124f461405e1ef64dfa8c4ab0cb7ebcf (fixed)

Vendor states this is fixed in 5.3 (unaffected)

Vendor states this is fixed in 6.12.91 (unaffected)

Vendor states this is fixed in 6.18.33 (unaffected)

Vendor states this is fixed in 6.6.141 (unaffected)

Vendor states this is fixed in 7.0.10 (unaffected)

Vendor states this is fixed in 7.1 (unaffected)