High severity · published Sep 23, 2025
CVE-2025-39869
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…
7.1
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
4.4 before 5.4.300; 5.5 before 5.10.245; 5.11 before 5.15.194; 5.16 before 6.1.153; 6.2 before 6.6.107; 6.7 before 6.12.48; +6 more · source: NVD
DL
Debian Linux · Debian
11.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-39869
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-39869
Patch
https://git.kernel.org/stable/c/069fd1688c57c0cc8a3de64d108579b31676f74b
Patch
https://git.kernel.org/stable/c/1baed10553fc8b388351d8fc803e3ae6f1a863bc
Patch
https://git.kernel.org/stable/c/301a96cc4dc006c9a285913d301e681cfbf7edb6
Patch
https://git.kernel.org/stable/c/5e462fa0dfdb52b3983cf41532d3d4c7d63e2f93
Patch
https://git.kernel.org/stable/c/7d4de60d6db02d9b01d5890d5156b04fad65d07a
Patch
https://git.kernel.org/stable/c/d5e82f3f2c918d446df46e8d65f8083fd97cdec5
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