What’s Vulnerable › Vulnerabilities

CVE-2026-80654: soc: xilinx: Shutdown and free rx mailbox channel

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-10-30

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.

Affected products

• Linux: 5.6 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/059522f4df86198f0df10dbc53d7ac04cf36a0b8
• https://git.kernel.org/stable/c/75ed49f973d790ca3111fcabd516c0b5fd0170b4
• https://git.kernel.org/stable/c/a83e77d1e52c01c50096e6e97c57d34e0590d628
• https://git.kernel.org/stable/c/b0f748c563921a7918c78e6a599cefd54de7d688
• https://git.kernel.org/stable/c/b5d2240c2c7bc8370e7ba54a2e1fe3919f55aee5
• https://git.kernel.org/stable/c/fdee7c66c0d7b6869c36b9f9a915abf29ab5b550

Get alerted when CVE-2026-80654 or the next vulnerability affects your stack