Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: soc: xilinx: Shutdown and free rx mailbox channel A mbox rx channel is requested using mbox_request_channel_byname() in probe. In remove callback, the rx mailbox channel is cleaned up when the rx_chan is NULL due to incorrect condition check. The mailbox channel is not shutdown and it can receive messages even after the device removal. This leads to use after free. Also the channel resources are not freed. Fix this by checking the rx_chan correctly.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df before 75ed49f973d790ca3111fcabd516c0b5fd0170b4; affected ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df before b0f748c563921a7918c78e6a599cefd54de7d688; affected ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df before a83e77d1e52c01c50096e6e97c57d34e0590d628; affected ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df before b5d2240c2c7bc8370e7ba54a2e1fe3919f55aee5; affected ffdbae28d9d1af70b7d63ffd7827e9795cd8d0df before fdee7c66c0d7b6869c36b9f9a915abf29ab5b550 |
| Linux / Linux | affected 5.6; unaffected 0 before 5.6; unaffected 6.6.160 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/75ed49f973d790ca3111fcabd516c0b5fd0170b4
- https://git.kernel.org/stable/c/b0f748c563921a7918c78e6a599cefd54de7d688
- https://git.kernel.org/stable/c/a83e77d1e52c01c50096e6e97c57d34e0590d628
- https://git.kernel.org/stable/c/b5d2240c2c7bc8370e7ba54a2e1fe3919f55aee5
- https://git.kernel.org/stable/c/fdee7c66c0d7b6869c36b9f9a915abf29ab5b550