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CVE-2025-40276

drm/panthor: Flush shmem writes before mapping buffers CPU-uncached

HIGH
7.3
CVSS Score
Published: December 6, 2025 at 09:50 PM UTC
Updated: October 15, 2026 at 07:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.3
Exploit prediction
EPSS 0.1%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
6.108a1cc07578bf42d85f008316873d710ff684dd29
Vendor states this is fixed in 576c930e5e7dcb937648490611a83f1bf0171048 (fixed)
Vendor states this is fixed in 7a12f9c96d06b145562f76ffb20369b4692f0911 (fixed)
Vendor states this is fixed in 8355eea2a2e9c323021dfdcb95d7767d382123c4 (fixed)
Vendor states this is fixed in 6.10 (unaffected)
Vendor states this is fixed in 6.12.64 (unaffected)
Vendor states this is fixed in 6.17.9 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

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

CVSS

7.3HIGHLinux
Vector?

Quick Info

StatusDEFERRED

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