CVE-2024-35842: ASoC: mediatek: sof-common: Add NULL check for normal_link string

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: mediatek: sof-common: Add NULL check for normal_link string It's not granted that all entries of struct sof_conn_stream declare a `normal_link` (a non-SOF, direct link) string, and this is the case for SoCs that support only SOF paths (hence do not support both direct and SOF usecases). For example, in the case of MT8188 there is no normal_link string in any of the sof_conn_stream entries and there will be more drivers doing that in the future. To avoid possible NULL pointer KPs, add a NULL check for `normal_link`.

Affected products

Linux kernel: from 6.0 before 6.1.75; from 6.2 before 6.6.14; from 6.7 before 6.7.2 — fixed in 6.1.75, 6.6.14, 6.7.2

How to fix

Upgrade to a fixed version: Linux kernel 6.1.75, 6.6.14, 6.7.2. Check the vendor advisory for mitigations.

References

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