CVE-2025-40276
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-06

Last updated on: 2025-12-08

Assigner: kernel.org

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.
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Meta Information
Published
2025-12-06
Last Modified
2025-12-08
Generated
2026-06-16
AI Q&A
2025-12-07
EPSS Evaluated
2026-06-15
NVD
CVE-2025-40276
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel's drm/panthor component involves the shmem layer not properly flushing CPU cache lines before mapping buffers as CPU-uncached. Because the shmem layer zeroes new pages using cached mappings without flushing, dirty cache lines may remain, which can lead to potential data leaks or asynchronous buffer corruption when these dirty cache lines are evicted.

Impact Analysis

The vulnerability can lead to potential data leaks and asynchronous buffer corruption. This means sensitive data might be exposed unintentionally, and buffers may become corrupted unpredictably, potentially affecting system stability and security.

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