CVE-2025-39869: Debian Linux

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Debian Debian Linux: version 11.0 only
• Linux Linux Kernel: from 4.4, before 5.4.300 (fixed in 5.4.300); from 5.5, before 5.10.245 (fixed in 5.10.245); from 5.11, before 5.15.194 (fixed in 5.15.194); from 5.16, before 6.1.153 (fixed in 6.1.153); from 6.2, before 6.6.107 (fixed in 6.6.107); from 6.7, before 6.12.48 (fixed in 6.12.48); …

Published 2025-09-23. Last modified 2026-07-30.