CVE-2026-43281

HighCVSS 7.1/10Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()

Although it is guided that `#mbox-cells` must be at least 1, there are many instances of `#mbox-cells = <0>;` in the device tree. If that is the case and the corresponding mailbox controller does not provide `fw_xlate` and of_xlate` function pointers, `fw_mbox_index_xlate()` will be used by default and out-of-bounds accesses could occur due to lack of bounds check in that function.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness enumeration

CWE-125

Affected software

VendorProductVersions
LinuxLinux>= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < 2c7ff651ec6b660c7c96a36db9328b3232f555d8; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < ec0874447895b994182a962d2fee9ef075de5efd; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < 2662ed331a69c0b551f78af58f12eb629a89a36f; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < 31c4c67dec3362094a6747a171a4848e98542265; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < 01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < 4caae8168d1b808c7d4ff481295292e3f97f90fb; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < f50b39fd7c72a8734153644ee945ca0d8b2e65ab; >= 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c, < fcd7f96c783626c07ee3ed75fa3739a8a2052310
LinuxLinux3.18

References

Timeline

Published
May 6, 2026
Last modified
Nov 11, 2026
NVD status
Modified

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CVE-2026-43281: High severity, CVSS 7.1 | Vulnix