What’s Vulnerable › Vulnerabilities

CVE-2022-49538: ALSA: jack: Access input_dev under mutex

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: ALSA: jack: Access input_dev under mutex It is possible when using ASoC that input_dev is unregistered while calling snd_jack_report, which causes NULL pointer dereference. In order to prevent this serialize access to input_dev using mutex lock.

Affected products

• Linux kernel: before 4.9.318; from 4.10 before 4.14.283; from 4.15 before 4.19.247; from 4.20 before 5.4.198; from 5.5 before 5.10.121; from 5.11 before 5.15.46 — fixed in 4.14.283, 4.19.247, 4.9.318, 5.10.121, 5.15.46, 5.17.14

How to fix

Upgrade to a fixed version: Linux kernel 4.14.283, 4.19.247, 4.9.318, 5.10.121. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1b6a6fc5280e97559287b61eade2d4b363e836f2
• https://git.kernel.org/stable/c/582aea6084cc59fec881204f026816d1219f2348
• https://git.kernel.org/stable/c/5cc6f623f4818c7d7e9e966a45ebf324901ca9c5
• https://git.kernel.org/stable/c/74bab3bcf422593c582e47130aa8eb41ebb2dc09
• https://git.kernel.org/stable/c/8487a88136d54a1a4d3f26f1399685db648ab879
• https://git.kernel.org/stable/c/9e6a73b0c0f2014eb89249fb1640c5a3d58221c4
• https://git.kernel.org/stable/c/c093b62c40027c21d649c5534ad7aa3605a99b00
• https://git.kernel.org/stable/c/e2b8681769f6e205382f026b907d28aa5ec9d59a
• https://git.kernel.org/stable/c/f68bed124c7699e23ffb4ce4fcc84671e9193cde

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