Linux Kernel up to 6.18.34/7.0.11 xfrm allocation of resources

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.18.34/7.0.11. Affected is an unknown function of the component xfrm. Such manipulation leads to allocation of resources. This vulnerability is documented as CVE-2026-52932. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 6.18.34/7.0.11. Affected by this issue is an unknown code block of the component xfrm. The manipulation with an unknown input leads to a allocation of resources vulnerability. Using CWE to declare the problem leads to CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. The impact remains unknown. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: xfrm: ipcomp: Free destination pages on acomp errors Move the out_free_req label up by a couple of lines so that the allocated dst SG list gets freed on error as well as success.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-52932 since 06/09/2026. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.18.35 or 7.0.12 eliminates this vulnerability. Applying the patch dc6dcba80d72a27ab61831ad3d253316e0c9b9d5/b30aa173c3809f6af4c83a86099be1be19aa48eb/7dbac7680eb629b3b4dc7e98c34f943b8814c0c8 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
• 6.18.33
• 6.18.34
• 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
• 7.0.10
• 7.0.11

License

• open-source

Website

• Vendor: https://www.kernel.org/

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