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Vulnerability record · CVE-2026-53294 · published 26 June 2026

CVE-2026-53294: Linux kernel double free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.6% CWE-415 · Double free
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
8 Jul 2026Last modified by NVD

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/240c71a2aea36a1a4210f911a1c32ea88777e8e4 Patch
https://git.kernel.org/stable/c/3afca89fae501dbd7421e1777b5b8f033b1d98d0 Patch
https://git.kernel.org/stable/c/5c209299b0113e289e238fa5f2e8f00c59f76060 Patch
https://git.kernel.org/stable/c/5d4f3d0f64f1016cb78b400a70b67df91fac99b5 Patch
https://git.kernel.org/stable/c/82f6dcea46cf5de65c4ba7283f7c7b34de4a324d Patch
https://git.kernel.org/stable/c/88ebadbf0deefdaccdab868b44ff70a0a257f473 Patch
https://git.kernel.org/stable/c/c494a11da45ad7ec9b0ff216c3e3ace351193bb6 Patch
https://git.kernel.org/stable/c/fc0089f82c3e36060c2c79156bc2018bfb16b56b Patch

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Source: NIST National Vulnerability Database (record CVE-2026-53294), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.