CVE-2025-39869

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

HIGH

7.1

CVSS Score

Published: September 23, 2025 at 06:00 AM UTC

Updated: October 19, 2026 at 09:10 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

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Severity

HIGH7.1

Exploit prediction

EPSS 0.2%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

11.0

Linux Kernel · Linux

95%

4.4 ≤ v < 5.4.3005.11 ≤ v < 5.15.1945.16 ≤ v < 6.1.1535.5 ≤ v < 5.10.2456.13 ≤ v < 6.16.86.2 ≤ v < 6.6.1076.7 ≤ v < 6.12.482b6b3b7420190888793c49e97276e1e73bd7eaed6.17 6.17 rc1 6.17 rc2 6.17 rc3 6.17 rc4 6.17 rc5

Vendor states this is fixed in 069fd1688c57c0cc8a3de64d108579b31676f74b (fixed)

Vendor states this is fixed in 1baed10553fc8b388351d8fc803e3ae6f1a863bc (fixed)

Vendor states this is fixed in 301a96cc4dc006c9a285913d301e681cfbf7edb6 (fixed)

Vendor states this is fixed in 5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93 (fixed)

Vendor states this is fixed in 7d4de60d6db02d9b01d5890d5156b04fad65d07a (fixed)

Vendor states this is fixed in d5e82f3f2c918d446df46e8d65f8083fd97cdec5 (fixed)

Vendor states this is fixed in d722de80ce037dccf6931e778f4a46499d51bdf9 (fixed)

Vendor states this is fixed in e63419dbf2ceb083c1651852209c7f048089ac0f (fixed)

Vendor states this is fixed in 4.4 (unaffected)

Vendor states this is fixed in 5.10.245 (unaffected)

Vendor states this is fixed in 5.15.194 (unaffected)

Vendor states this is fixed in 5.4.300 (unaffected)