Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5039563e7c25eccd7fec1de6706011009d1c5665 before 6e8eb467bed6aa1a563dba8f366c9fd76ba0004e; affected 5039563e7c25eccd7fec1de6706011009d1c5665 before eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0; affected 5039563e7c25eccd7fec1de6706011009d1c5665 before c73a58661a760373d08a6883af4f0bb5cc991a67; affected 5039563e7c25eccd7fec1de6706011009d1c5665 before e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0; affected 5039563e7c25eccd7fec1de6706011009d1c5665 before cc34d77dd48708d810c12bfd6f5bf03304f6c824 |
| Linux / Linux | affected 4.20; unaffected 0 before 4.20; unaffected 6.6.160 through 6.6.*; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
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