Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iio: buffer: serialize buffer teardown with mode claims Buffer-mode claims hold mlock to guarantee that the device remains in buffer mode until the claim is released. Normal buffer updates take info_exist_lock followed by mlock in iio_update_buffers(). However, iio_device_unregister() disables and deactivates all buffers without taking mlock. This can invalidate buffer state, including active_scan_mask, while a buffer-mode claim is held. Take mlock in iio_disable_all_buffers() so that unregister honors the mode-claim lifetime guarantee. The info_exist_lock -> mlock ordering matches iio_update_buffers().
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0a8565425afd8ba0e1a0ea73e21da119ee6dacea before 6a728408ff522b749c2a3c7e68f44e861fa0dbfb; affected 0a8565425afd8ba0e1a0ea73e21da119ee6dacea before 89f3852a28fcf7bab599280cb082baa0675536db; affected 0a8565425afd8ba0e1a0ea73e21da119ee6dacea before b466db9e68b4741af85f6c017e2bb0a2f025053f; affected 0a8565425afd8ba0e1a0ea73e21da119ee6dacea before e63188d77e10c0951bf67da6c295f768fd1abf4b; affected 0a8565425afd8ba0e1a0ea73e21da119ee6dacea before 84bb0fc46ccf6a545b8fdf57cda83770186ed8dd; affected a9c471892d75847671a246619c2148578f22bbc6; affected 7bca0af538a49dacb1470f233be0676bdc09605b; affected 5.15.137 before 5.16; affected 6.1.60 before 6.2 |
| Linux / Linux | affected 6.2; unaffected 0 before 6.2; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6a728408ff522b749c2a3c7e68f44e861fa0dbfb
- https://git.kernel.org/stable/c/89f3852a28fcf7bab599280cb082baa0675536db
- https://git.kernel.org/stable/c/b466db9e68b4741af85f6c017e2bb0a2f025053f
- https://git.kernel.org/stable/c/e63188d77e10c0951bf67da6c295f768fd1abf4b
- https://git.kernel.org/stable/c/84bb0fc46ccf6a545b8fdf57cda83770186ed8dd