CVEvulnerability
CVE-2026-80654
- Status
- Received
- Published
- 2026-08-28
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Description
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.
References
- https://git.kernel.org/stable/c/75ed49f973d790ca3111fcabd516c0b5fd0170b4 git.kernel.org
- https://git.kernel.org/stable/c/a83e77d1e52c01c50096e6e97c57d34e0590d628 git.kernel.org
- https://git.kernel.org/stable/c/b0f748c563921a7918c78e6a599cefd54de7d688 git.kernel.org
- https://git.kernel.org/stable/c/b5d2240c2c7bc8370e7ba54a2e1fe3919f55aee5 git.kernel.org
- https://git.kernel.org/stable/c/fdee7c66c0d7b6869c36b9f9a915abf29ab5b550 git.kernel.org