Bug 2401409 (CVE-2025-39935) - CVE-2025-39935 kernel: ASoC: codec: sma1307: Fix memory corruption in sma1307_setting_loaded()
Summary: CVE-2025-39935 kernel: ASoC: codec: sma1307: Fix memory corruption in sma1307...
Keywords:
Status: NEW
Alias: CVE-2025-39935
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-10-04 08:01 UTC by OSIDB Bzimport
Modified: 2025-10-06 18:54 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2025-10-04 08:01:23 UTC
In the Linux kernel, the following vulnerability has been resolved:

ASoC: codec: sma1307: Fix memory corruption in sma1307_setting_loaded()

The sma1307->set.header_size is how many integers are in the header
(there are 8 of them) but instead of allocating space of 8 integers
we allocate 8 bytes.  This leads to memory corruption when we copy data
it on the next line:

        memcpy(sma1307->set.header, data,
               sma1307->set.header_size * sizeof(int));

Also since we're immediately copying over the memory in ->set.header,
there is no need to zero it in the allocator.  Use devm_kmalloc_array()
to allocate the memory instead.


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