Description
In the Linux kernel, the following vulnerability has been resolved: spi: 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] Also note that we do not enable the driver_override feature of struct bus_type, as SPI - in contrast to most other buses - passes "" to sysfs_emit() when the driver_override pointer is NULL. Thus, printing "\n" instead of "(null)\n".
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5039563e7c25eccd7fec1de6706011009d1c5665 to < 6e8eb467bed6aa1a563dba8f366c9fd76ba0004eaffected5039563e7c25eccd7fec1de6706011009d1c5665 to < eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0affected5039563e7c25eccd7fec1de6706011009d1c5665 to < c73a58661a760373d08a6883af4f0bb5cc991a67affected5039563e7c25eccd7fec1de6706011009d1c5665 to < e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0affected5039563e7c25eccd7fec1de6706011009d1c5665 to < cc34d77dd48708d810c12bfd6f5bf03304f6c824affected
Linux Linux
Default version status: affected
4.20affected0 to < 4.20unaffected6.6.160 to ≤ 6.6.*unaffected6.12.80 to ≤ 6.12.*unaffected6.18.21 to ≤ 6.18.*unaffected6.19.11 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/6e8eb467bed6aa1a563dba8f366c9fd76ba0004e ↗
- https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0 ↗
- https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67 ↗
- https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0 ↗
- https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824 ↗