Linux Kernel up to 7.1.4 ASoC snd_sof_load_topology memory leak

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 7.1.4. This issue affects the function snd_sof_load_topology of the component ASoC. Performing a manipulation results in memory leak. This vulnerability is cataloged as CVE-2026-72263. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel up to 7.1.4. It has been classified as critical. This affects the function snd_sof_load_topology of the component ASoC. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: topology: fix memory leak in snd_sof_load_topology When the topology filename contains "dummy" and tplg_cnt is 0, the function returns -EINVAL directly without freeing the tplg_files allocated by kcalloc() at line 2497. This leaks memory on every such topology load attempt. Fix this by setting ret = -EINVAL and jumping to the out: label, which already handles the kfree(tplg_files) cleanup.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-72263 since 08/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/15/2026). MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 7.1.5 or 7.2-rc1 eliminates this vulnerability. Applying the patch 6ed7787c43ecf4ae27a3e700cab53a1ed646c7f8/d46f9f23897261da53ffbeb89d48a13982ba7d28 is able to eliminate this problem.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 7.1.0
• 7.1.1
• 7.1.2
• 7.1.3
• 7.1.4

License

• open-source

Website

• Vendor: https://www.kernel.org/

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