What is CVE-2025-40276?

CVE-2025-40276 is a high-severity vulnerability in Linux. CVSS score: 7.3/10. Published 2025-12-06.

How severe is CVE-2025-40276?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Linux

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.

EPSS: 0.002 (6.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H.

Affected products

Linux — versions 8a1cc07578bf42d85f008316873d710ff684dd29, 6.10, 0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67

Frequently asked questions

What is CVE-2025-40276?: CVE-2025-40276 is a high-severity vulnerability in Linux. CVSS score: 7.3/10. Published 2025-12-06.
How severe is CVE-2025-40276?: High severity. CVSS v3 base score is 7.3 out of 10.