CVE-2026-23430: drm/vmwgfx: Don't overwrite KMS surface dirty tracker

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-03 · updated 2026-07-24
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Don't overwrite KMS surface dirty tracker We were overwriting the surface's dirty tracker here causing a memory leak.

Affected products

Linux kernel: from 6.16.1 before 6.18.20; from 6.19 before 6.19.10; 6.16, 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4, 7.0-rc5 (+2) — fixed in 6.18.20, 6.19.10

How to fix

Upgrade to a fixed version: Linux kernel 6.18.20, 6.19.10. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/354c8bbf8d1e4aa61e580dbe160591feda504e4f
https://git.kernel.org/stable/c/3f300a41a3668095688aa4551214e8080829fa93
https://git.kernel.org/stable/c/c6cb77c474a32265e21c4871c7992468bf5e7638

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