# CVE-2026-31475: linux: In the Linux kernel, the following vulnerability has been resolved:  ASoC: sma1307: fix double free of devm_kzalloc()...

CVE-2026-31475 is fixed in linux on 1 platform by DEBIAN-CVE-2026-31475 (version 6.19.11-1), released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-31475
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 22, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.19.11-1 | [DEBIAN-CVE-2026-31475](https://patchblox.com/security/data/fix/linux/debian-cve-2026-31475.md) | May 15, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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