Linux Kernel up to 6.18.19/6.19.9/7.0-rc2 xe check_bo_args_are_sane memory leak

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.18.19/6.19.9/7.0-rc2 and classified as critical. This vulnerability affects the function check_bo_args_are_sane of the component xe. The manipulation leads to memory leak. This vulnerability is uniquely identified as CVE-2026-31390. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.19/6.19.9/7.0-rc2 and classified as critical. This issue affects the function check_bo_args_are_sane of the component xe. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Fix memory leak in xe_vm_madvise_ioctl When check_bo_args_are_sane() validation fails, jump to the new free_vmas cleanup label to properly free the allocated resources. This ensures proper cleanup in this error path. (cherry picked from commit 29bd06faf727a4b76663e4be0f7d770e2d2a7965)

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-31390 since 03/09/2026. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 304990 (Linux Distros Unpatched Vulnerability : CVE-2026-31390), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.20, 6.19.10 or 7.0-rc3 eliminates this vulnerability. Applying the patch c3aa7b837920c844d5ae0dd3dbaeb465a461de40/1c87b48a0ff040723f84a67b32892af7e6a3634f/0cfe9c4838f1147713f6b5c02094cd4dc0c598fa 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.

The vulnerability is also documented in the vulnerability database at Tenable (304990). Be aware that VulDB is the high quality 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
• 6.19.0
• 6.19.1
• 6.19.2
• 6.19.3
• 6.19.4
• 6.19.5
• 6.19.6
• 6.19.7
• 6.19.8
• 6.19.9
• 7.0-rc1
• 7.0-rc2

License

• open-source

Website

• Vendor: https://www.kernel.org/

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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