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🛡️ CVE-2025-39869 — debian-linux

🟠 CVSS 8.4 — High ✅ No Known Exploit CWE-125 NVD
8.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

dmaengine: ti: edma: Fix memory allocation size for queue_priority_map

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: ti: edma: Fix memory allocation size for queue_priority_map

Fix a critical memory allocation bug in edma_setup_from_hw() where

queue_priority_map was allocated with insufficient memory. The code

declared queue_priority_map as s8 (*)[2] (pointer to array of 2 s8),

but allocated memory using sizeof(s8) instead of the correct size.

This caused out-of-bounds memory writes when accessing:

queue_priority_map[i][0] = i;

queue_priority_map[i][1] = i;

The bug manifested as kernel crashes with "Oops - undefined instruction"

on ARM platforms (BeagleBoard-X15) during EDMA driver probe, as the

memory corruption triggered kernel hardening features on Clang.

Change the allocation to use sizeof(*queue_priority_map) which

automatically gets the correct size for the 2D array structure.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2025-39869 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.

Affected software

CVE-2025-39869 is recorded against 3 packages.

  • debian-linux
  • kernel (from 6.13.0 up to 6.16.8)
  • linux-kernel

Timeline and source

Published on 23 September 2025 and last revised on 30 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
git.kernel.org
lists.debian.org

CVE-2025-39869 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.4
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-125
Public Exploit ✅ No
Source NVD
Published 2025-09-23
Updated 2026-08-20
Modified 2026-07-30

Affected Packages

Software From version Fixed in
debian-linux — —
kernel 6.13.0 6.16.8
linux-kernel — —

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.