CVE-2025-39741
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-11

Last updated on: 2025-11-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/xe/migrate: don't overflow max copy size With non-page aligned copy, we need to use 4 byte aligned pitch, however the size itself might still be close to our maximum of ~8M, and so the dimensions of the copy can easily exceed the S16_MAX limit of the copy command leading to the following assert: xe 0000:03:00.0: [drm] Assertion `size / pitch <= ((s16)(((u16)~0U) >> 1))` failed! platform: BATTLEMAGE subplatform: 1 graphics: Xe2_HPG 20.01 step A0 media: Xe2_HPM 13.01 step A1 tile: 0 VRAM 10.0 GiB GT: 0 type 1 WARNING: CPU: 23 PID: 10605 at drivers/gpu/drm/xe/xe_migrate.c:673 emit_copy+0x4b5/0x4e0 [xe] To fix this account for the pitch when calculating the number of current bytes to copy. (cherry picked from commit 8c2d61e0e916e077fda7e7b8e67f25ffe0f361fc)
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Meta Information
Published
2025-09-11
Last Modified
2025-11-25
Generated
2026-06-16
AI Q&A
2025-09-11
EPSS Evaluated
2026-06-14
NVD
CVE-2025-39741
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.17
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
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Executive Summary

This vulnerability in the Linux kernel's drm/xe/migrate component involves an overflow of the maximum copy size during non-page aligned memory copy operations. Specifically, when copying data with a 4-byte aligned pitch, the size of the copy can approach the maximum limit (~8M), causing the dimensions of the copy to exceed the S16_MAX limit of the copy command. This leads to an assertion failure in the kernel, which can cause system instability or crashes. The fix involves properly accounting for the pitch when calculating the number of bytes to copy to prevent this overflow.

Impact Analysis

This vulnerability can cause the Linux kernel to hit an assertion failure during certain GPU memory copy operations, potentially leading to system crashes or instability. This could disrupt normal system operation, cause loss of data in memory operations, or affect applications relying on GPU functionality.

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