CVE-2025-39869

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

State: Published
Severity: 8.4 High
Published: Sep 23, 2025
Updated: Aug 5, 2026
Reserved: Apr 16, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	2b6b3b7420190888793c49e97276e1e73bd7eaed to before 7d4de60d6db02d9b01d5890d5156b04fad65d07aAffected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before d722de80ce037dccf6931e778f4a46499d51bdf9Affected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before 301a96cc4dc006c9a285913d301e681cfbf7edb6Affected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before 5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93Affected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before 1baed10553fc8b388351d8fc803e3ae6f1a863bcAffected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before 069fd1688c57c0cc8a3de64d108579b31676f74bAffected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before d5e82f3f2c918d446df46e8d65f8083fd97cdec5Affected 2b6b3b7420190888793c49e97276e1e73bd7eaed to before e63419dbf2ceb083c1651852209c7f048089ac0fAffected
LinuxLinux	4.4Affected before 4.4Not affected 5.4.300 through 5.4.Not affected 5.10.245 through 5.10.Not affected 5.15.194 through 5.15.Not affected 6.1.153 through 6.1.Not affected 6.6.107 through 6.6.Not affected 6.12.48 through 6.12.Not affected 6.16.8 through 6.16.*Not affected 6.17 and laterNot affected

Product

Versions

LinuxLinux

2b6b3b7420190888793c49e97276e1e73bd7eaed to before 7d4de60d6db02d9b01d5890d5156b04fad65d07aAffected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before d722de80ce037dccf6931e778f4a46499d51bdf9Affected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before 301a96cc4dc006c9a285913d301e681cfbf7edb6Affected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before 5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93Affected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before 1baed10553fc8b388351d8fc803e3ae6f1a863bcAffected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before 069fd1688c57c0cc8a3de64d108579b31676f74bAffected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before d5e82f3f2c918d446df46e8d65f8083fd97cdec5Affected
2b6b3b7420190888793c49e97276e1e73bd7eaed to before e63419dbf2ceb083c1651852209c7f048089ac0fAffected

LinuxLinux

4.4Affected
before 4.4Not affected
5.4.300 through 5.4.*Not affected
5.10.245 through 5.10.*Not affected
5.15.194 through 5.15.*Not affected
6.1.153 through 6.1.*Not affected
6.6.107 through 6.6.*Not affected
6.12.48 through 6.12.*Not affected
6.16.8 through 6.16.*Not affected
6.17 and laterNot affected

References

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