CVE-2026-43281

HIGH EPSS 2.1%
Published May 6, 20261mo ago · Modified Jun 17, 20262w ago
7.1 CVSS 3.1
High
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.1
Exploitability
1.8
Impact
5.2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
2.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥3.18.1  –  <6.1.167
linuxlinux_kernel*≥6.2  –  <6.6.130
linuxlinux_kernel*≥6.7  –  <6.12.77
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6
linuxlinux_kernel3.18any
linuxlinux_kernel3.18any
linuxlinux_kernel3.18any
linuxlinux_kernel3.18any
linuxlinux_kernel3.18any
linuxlinux_kernel3.18any
linuxlinux_kernel3.18any

References 8

  • git.kernel.org https://git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2c7ff651ec6b660c7c96a36db9328b3232f555d8
  • git.kernel.org https://git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/ec0874447895b994182a962d2fee9ef075de5efd
  • git.kernel.org https://git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/01d9a8c2615d436b2b30c19c1afe9fcd5726ff6d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2662ed331a69c0b551f78af58f12eb629a89a36f
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/31c4c67dec3362094a6747a171a4848e98542265
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4caae8168d1b808c7d4ff481295292e3f97f90fb
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/f50b39fd7c72a8734153644ee945ca0d8b2e65ab
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fcd7f96c783626c07ee3ed75fa3739a8a2052310
    Patch