Linux Kernel up to 6.18.32/7.0.9 i3c renesas_i3c_i3c_xfers memory leak

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.18.32/7.0.9. This vulnerability affects the function renesas_i3c_i3c_xfers of the component i3c. Executing a manipulation can lead to memory leak. This vulnerability is registered as CVE-2026-53030. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.18.32/7.0.9. This vulnerability affects the function renesas_i3c_i3c_xfers of the component i3c. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: i3c: master: renesas: Fix memory leak in renesas_i3c_i3c_xfers() The xfer structure allocated by renesas_i3c_alloc_xfer() was never freed in the renesas_i3c_i3c_xfers() function. Use the __free(kfree) cleanup attribute to automatically free the memory when the variable goes out of scope.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-53030 since 06/09/2026. There are known technical details, but no exploit is available.

Upgrading to version 6.18.33 or 7.0.10 eliminates this vulnerability. Applying the patch 1b6a7e94be678d34a9ccb9db7e2443ae02ad2bc8/ab8f00ffcca0f618fb8198d358f24728950d9860/d7665c3b4f575251e449e2656879392346ca612b is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
• 6.18.9
• 6.18.10
• 6.18.11
• 6.18.12
• 6.18.13
• 6.18.14
• 6.18.15
• 6.18.16
• 6.18.17
• 6.18.18
• 6.18.19
• 6.18.20
• 6.18.21
• 6.18.22
• 6.18.23
• 6.18.24
• 6.18.25
• 6.18.26
• 6.18.27
• 6.18.28
• 6.18.29
• 6.18.30
• 6.18.31
• 6.18.32
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9

License

• open-source

Website

• Vendor: https://www.kernel.org/

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