CVE-2026-53294
Analyzed
Analyzed - Analysis Complete
Double-Free in Linux Kernel Mailbox Test Driver
Vulnerability report for CVE-2026-53294, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-06-26
Last updated on: 2026-07-08
Assigner: kernel.org
Description
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 7.1 |
| linux | linux_kernel | From 6.2 (inc) to 6.6.141 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.91 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.33 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 7.0.10 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.175 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.209 (exc) |
| linux | linux_kernel | From 4.4 (inc) to 5.10.258 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-415 | The product calls free() twice on the same memory address. |
