CVE-2025-40276
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: Flush shmem writes before mapping buffers CPU-uncached The shmem layer zeroes out the new pages using cached mappings, and if we don't CPU-flush we might leave dirty cachelines behind, leading to potential data leaks and/or asynchronous buffer corruption when dirty cachelines are evicted.
Affected versions
Linux kernel versions
6.10
and later are affected. Fixed in
6.12.64,
6.17.9,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-40276 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/576c930e5e7dcb937648490611a83f1bf0171048
-
PatchKernel patch commithttps://git.kernel.org/stable/c/7a12f9c96d06b145562f76ffb20369b4692f0911
-
PatchKernel patch commithttps://git.kernel.org/stable/c/8355eea2a2e9c323021dfdcb95d7767d382123c4
Frequently asked questions
-
What is CVE-2025-40276?
CVE-2025-40276 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.10 onward and has been patched in 6.12.64, 6.17.9 and 6.18. CVE-2025-40276 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2025-40276?
Yes — CVE-2025-40276 has been patched. Fixed versions include 6.12.64, 6.17.9 and 6.18. If you are running Linux kernel 6.10 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2025-40276 actively exploited?
No — CVE-2025-40276 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.