CVE-2022-48717: ASoC: max9759: fix underflow in speaker_gain_control_put()

Severity: high (CVSS 7.8 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: 2024-06-20 · updated 2026-08-04
Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: max9759: fix underflow in speaker_gain_control_put() Check for negative values of "priv->gain" to prevent an out of bounds access. The concern is that these might come from the user via: -> snd_ctl_elem_write_user() -> snd_ctl_elem_write() -> kctl->put()

Affected products

Linux kernel: from 4.17 before 4.19.228; from 4.20 before 5.4.178; from 5.5 before 5.10.99; from 5.11 before 5.15.22; from 5.16 before 5.16.8; 5.17-rc1, 5.17-rc2 — fixed in 4.19.228, 5.10.99, 5.15.22, 5.16.8, 5.4.178

How to fix

Upgrade to a fixed version: Linux kernel 4.19.228, 5.10.99, 5.15.22, 5.16.8. Check the vendor advisory for mitigations.

References

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