CVE-2026-43281
High
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.
SeverityHigh
CVSS7.1
Exploit probability—
Product
Linux Kernel
PublishedMay 6, 2026
First seenMay 6, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- linux linux_kernel6.1.167, 6.6.130, 6.12.77, 6.18.16, 6.19.6 or later
Patches
- git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d
- git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f
- git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265
- git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb
- git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab
- git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 3.18.1 ≤ v < 6.1.167, 6.2 ≤ v < 6.6.130, 6.7 ≤ v < 6.12.77, 6.13 ≤ v < 6.18.16, 6.19 ≤ v < 6.19.6, 3.18 | 6.1.167, 6.6.130, 6.12.77, 6.18.16, 6.19.6 |
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