mailbox: mailbox-test: don't free the reused channel
CVE-2026-53294 is fixed in linux on 1 platform, first by DEBIAN-CVE-2026-53294, released June 27, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: mailbox: mailbox-test: don't free the reused channel The RX channel can be aliased to the TX channel if it has a different MMIO. This special case needs to be handled when freeing the channels otherwise a double-free occurs.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.176-1 | DEBIAN-CVE-2026-53294 | Jun 27, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.94-1 | DEBIAN-CVE-2026-53294 | Jun 27, 2026 |
| linux · Debian 14 | 7.0.10-1 | DEBIAN-CVE-2026-53294 | Jun 27, 2026 |
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