CVE-2026-53294
Received Received - Intake
Double-Free in Linux Kernel Mailbox Test Driver

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: kernel.org

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.
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Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-27
AI Q&A
2026-06-26
EPSS Evaluated
N/A
NVD
CVE-2026-53294
EUVD
EUVD-2026-39899
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's mailbox-test component. It involves improper handling of RX and TX channels when they share different MMIO (Memory-Mapped Input/Output) addresses. Specifically, the RX channel can be aliased to the TX channel, and if this special case is not handled correctly during channel freeing, it can lead to a double-free error.

Impact Analysis

The vulnerability can cause a double-free error in the Linux kernel's mailbox-test component. Double-free errors can lead to undefined behavior such as system crashes, memory corruption, or potential exploitation by attackers to execute arbitrary code or cause denial of service.

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