Bug 2460700 (CVE-2026-31475) - CVE-2026-31475 kernel: ASoC: sma1307: fix double free of devm_kzalloc() memory
Summary: CVE-2026-31475 kernel: ASoC: sma1307: fix double free of devm_kzalloc() memory
Keywords:
Status: NEW
Alias: CVE-2026-31475
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-22 15:06 UTC by OSIDB Bzimport
Modified: 2026-04-22 18:26 UTC (History)
0 users

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Description OSIDB Bzimport 2026-04-22 15:06:15 UTC
In the Linux kernel, the following vulnerability has been resolved:

ASoC: sma1307: fix double free of devm_kzalloc() memory

A previous change added NULL checks and cleanup for allocation
failures in sma1307_setting_loaded().

However, the cleanup for mode_set entries is wrong. Those entries are
allocated with devm_kzalloc(), so they are device-managed resources and
must not be freed with kfree(). Manually freeing them in the error path
can lead to a double free when devres later releases the same memory.

Drop the manual kfree() loop and let devres handle the cleanup.


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