CVE-2025-37800

Summary

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

driver core: fix potential NULL pointer dereference in dev_uevent()

If userspace reads "uevent" device attribute at the same time as another threads unbinds the device from its driver, change to dev->driver from a valid pointer to NULL may result in crash. Fix this by using READ_ONCE() when fetching the pointer, and take bus' drivers klist lock to make sure driver instance will not disappear while we access it.

Use WRITE_ONCE() when setting the driver pointer to ensure there is no tearing.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux16574dccd8f62dc1b585325f8a6a0aab10047ed8 < abe56be73eb10a677d16066f65ff9d30251f5eeeaffected
LinuxLinux16574dccd8f62dc1b585325f8a6a0aab10047ed8 < 2b344e779d9afd0fcb5ee4000e4d0fc7d8d867ebaffected
LinuxLinux16574dccd8f62dc1b585325f8a6a0aab10047ed8 < 3781e4b83e174364998855de777e184cf0b62c40affected
LinuxLinux16574dccd8f62dc1b585325f8a6a0aab10047ed8 < 18daa52418e7e4629ed1703b64777294209d2622affected
LinuxLinux2.6.22affected
LinuxLinux0 < 2.6.22unaffected
LinuxLinux6.6.89 <= 6.6.*unaffected
LinuxLinux6.12.26 <= 6.12.*unaffected
LinuxLinux6.14.5 <= 6.14.*unaffected
LinuxLinux6.15 <= *unaffected

Weaknesses

References