Description
In the Linux kernel, the following vulnerability has been resolved: driver core: use READ_ONCE() for dev->driver in dev_has_sync_state() dev_has_sync_state() reads dev->driver twice without holding device_lock() -- once for the NULL check and once to dereference ->sync_state. Some callers only hold device_links_write_lock, which doesn't prevent a concurrent unbind from clearing dev->driver via device_unbind_cleanup(). Fix it by reading dev->driver exactly once with READ_ONCE(), pairing with the WRITE_ONCE() in device_set_driver().
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
ac338acf514e7b578fa9e3742ec2c292323b4c1a to < 89789e4c141904506163dcb91c7289a074573931affectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < 51b3e1de53ee5b7775c7ff90e67fdb2665fce938affectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < 358697929351f619143f59c6a8a15a4994748b79affectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < 5e79e0180515b31b2e2244dc3d256fd8b5a07021affectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < 860885fcd2611bca8c28dac8b2c1c7ff160f763eaffectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < cc77f0d91e3214e4292208f02a1dc09a31f9aac7affectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < 9b0f4082a09760939588135d60a8e9cc994bfa3eaffectedac338acf514e7b578fa9e3742ec2c292323b4c1a to < e9506871a8ea304cde48ff4a57226df2aadddae3affected6d88283a49425eb469aa60ffebe76539e73c933eaffected5.5.13 to < 5.6affected
Linux Linux
Default version status: affected
5.6affected0 to < 5.6unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/89789e4c141904506163dcb91c7289a074573931 ↗
- https://git.kernel.org/stable/c/51b3e1de53ee5b7775c7ff90e67fdb2665fce938 ↗
- https://git.kernel.org/stable/c/358697929351f619143f59c6a8a15a4994748b79 ↗
- https://git.kernel.org/stable/c/5e79e0180515b31b2e2244dc3d256fd8b5a07021 ↗
- https://git.kernel.org/stable/c/860885fcd2611bca8c28dac8b2c1c7ff160f763e ↗
- https://git.kernel.org/stable/c/cc77f0d91e3214e4292208f02a1dc09a31f9aac7 ↗
- https://git.kernel.org/stable/c/9b0f4082a09760939588135d60a8e9cc994bfa3e ↗
- https://git.kernel.org/stable/c/e9506871a8ea304cde48ff4a57226df2aadddae3 ↗