soc: xilinx: Shutdown and free rx mailbox channel
CVE-2026-80654 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-80654, released August 29, 2026. It is not reported as exploited. Patch Radar priority: Urgent.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.81.1.150700.17.45.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-livepatch-SLE15-SP7-RT_Update_20 · sles 15.7 | 1-150700.1.3.1 | SUSE-SU-2026:4120-1 | Sep 10, 2026 |
| kernel-livepatch-SLE15-SP7_Update_21 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 | Oct 7, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.100-1 | DEBIAN-CVE-2026-80654 | Aug 29, 2026 |
| linux · Debian 14 | 7.1.5-1 | DEBIAN-CVE-2026-80654 | Aug 29, 2026 |
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