CVE-2026-53118

Summary

In the Linux kernel, the following vulnerability has been resolved:

vdpa: 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 Software

VendorProductVersion RangeStatus
LinuxLinux539fec78edb4e084e7c532affc56cc42d4ceea4b < 654ef9c33e138ede6734ac286282df9faf83cd11affected
LinuxLinux539fec78edb4e084e7c532affc56cc42d4ceea4b < fb5cb4913ce333cc4647722e8c2b8378e12f2464affected
LinuxLinux539fec78edb4e084e7c532affc56cc42d4ceea4b < 85bb534ff12aab6916058897b39c748940a7a4c6affected
LinuxLinux5.17affected
LinuxLinux0 < 5.17unaffected
LinuxLinux6.18.33 <= 6.18.*unaffected
LinuxLinux7.0.10 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References