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Vulnerability record · CVE-2026-64243 · published 24 July 2026

CVE-2026-64243: Linux kernel vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: simple-mux: Fix enum control bounds check simple_mux_control_put() rejects values greater than e->items, but enum control values are zero based. For the two-entry mux used by this driver, valid values are 0 and 1, so value 2 must be rejected as well. Accepting e->items can store an invalid mux state, pass it to the GPIO setter, and pass it on to the DAPM mux update path where it is used as an index into the enum text array. Use the same >= e->items check used by the ASoC enum helpers.

7.1 CVSS 3.1 High EPSS 0.17% · top 94.7% CWE-129 · CWE-129
7.1CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References
17 Aug 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: ASoC: codecs: simple-mux: Fix enum control bounds check simple_mux_control_put() rejects values greater than e->items, but enum control values are zero based. For the two-entry mux used by this driver, valid values are 0 and 1, so value 2 must be rejected as well. Accepting e->items can store an invalid mux state, pass it to the GPIO setter, and pass it on to the DAPM mux update path where it is used as an index into the enum text array. Use the same >= e->items check used by the ASoC enum helpers.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/05ef77f02607a3dc5d7f9762cb990f76843315d4 Patch
https://git.kernel.org/stable/c/164dcbec9632ca93ae313e6da6e4e05584fa0f02 Patch
https://git.kernel.org/stable/c/2ff3ac6f7664fe5639cad01712ac5e021fa7939c Patch
https://git.kernel.org/stable/c/5fe860af8630cf7c78523cbd68e5a234743585aa Patch
https://git.kernel.org/stable/c/6fb653b62f169f6050fac45b56bf21ad097e19f6 Patch
https://git.kernel.org/stable/c/d8cc3e747b002a8b965c529de79c0654675b9a1a Patch
https://git.kernel.org/stable/c/f63ad68e18d774a5d15cd7e405ead63f6b322679 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-64243), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.