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CVE-2026-90196: ASoC: SOF: validate topology volume range before allocation

• Severity: unknown
• 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: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: SOF: validate topology volume range before allocation SOF treats the topology mixer min and max values as non-negative indices into its volume table. It stores them in signed fields, allocates max + 1 entries through an int argument, and later indexes the table with the stored range. An inverted range is invalid, while a maximum at or above INT_MAX cannot be represented safely after the increment or in the signed fields. Validate the complete range before storing it or allocating the table.

Affected products

• Linux kernel: 5.2 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/72d0b77412aef2cec554cc84e176658f2a48dafa
• https://git.kernel.org/stable/c/8e1d63f5e272061208455b5aa4cc0d5bcbe5c1a8
• https://git.kernel.org/stable/c/992e130b888699d18da901b593d7a0fb75041a03
• https://git.kernel.org/stable/c/a698e4a60fa54268a38f4e66378851a196cb139b
• https://git.kernel.org/stable/c/cd63a1eb677e9548ba2d512be5dac4cb474ae145
• https://git.kernel.org/stable/c/d2f41287b51a3261d447ae38000f7a6f5860663a

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