CVE-2026-43281
mailbox: Prevent out-of-bounds access in fw_mbox_index_xlate()
Severity Score
7.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2026-05-01 CVE Reserved
- 2026-05-06 CVE Published
- 2026-05-11 CVE Updated
- 2026-05-12 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (7)
| URL | Tag | Source |
|---|---|---|
| https://git.kernel.org/stable/c/2b6d83e2b8b7de82331a6a1dcd64b51020a6031c | Vuln. Introduced |
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 6.1.167 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 6.1.167" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 6.6.130 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 6.6.130" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 6.12.77 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 6.12.77" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 6.18.16 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 6.18.16" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 6.19.6 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 6.19.6" | en |
Affected
| ||||||
| Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 3.18 < 7.0 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.18 < 7.0" | en |
Affected
| ||||||