PT-2025-49377 · Linux+3 · Linux Kernel+3
Published
2025-12-06
·
Updated
2026-03-13
·
CVE-2025-40276
None
No severity ratings or metrics are available. When they are, we'll update the corresponding info on the page.
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw within the drm/panthor subsystem related to shared memory (shmem) handling. Specifically, the shmem layer zeroes out new pages using cached mappings. Without a CPU flush operation, dirty cachelines may remain, potentially leading to data leaks or asynchronous buffer corruption when these cachelines are evicted. This issue affects the process of mapping buffers in a CPU-uncached manner.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu