CVE-2026-53294
Published Jun 26, 2026
Modified Jun 30, 2026
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.
EPSS — Exploit Prediction
0.0018
Probability of exploitation
0.07%
Percentile rank
EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.
References
Other References
https://git.kernel.org/stable/c/240c71a2aea36a1a4210f911a1c32ea88777e8e4
https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0
https://git.kernel.org/stable/c/5c209299b0113e289e238fa5f2e8f00c59f76060
https://git.kernel.org/stable/c/5d4f3d0f64f1016cb78b400a70b67df91fac99b5
https://git.kernel.org/stable/c/82f6dcea46cf5de65c4ba7283f7c7b34de4a324d
https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473
https://git.kernel.org/stable/c/c494a11da45ad7ec9b0ff216c3e3ace351193bb6
https://git.kernel.org/stable/c/fc0089f82c3e36060c2c79156bc2018bfb16b56b
Frequently Asked Questions
What is CVE-2026-53294? +
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.
How do I check if I'm vulnerable to CVE-2026-53294? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.