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.

CVSS 3.1

7.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-25)

Published

2025-12-06

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/576c930e5e7dcb937648490611a83f1bf0171048
• https://git.kernel.org/stable/c/7a12f9c96d06b145562f76ffb20369b4692f0911
• https://git.kernel.org/stable/c/8355eea2a2e9c323021dfdcb95d7767d382123c4

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