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CVE-2026-64243

HIGHCVSS 7.1/10EPSS 0.12%

Last modified

CVE-2026-64243 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.12% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.1/10

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

EPSS Probability
0.12%

2.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < 6fb653b62f169f6050fac45b56bf21ad097e19f6; >= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < d8cc3e747b002a8b965c529de79c0654675b9a1a; >= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < 5fe860af8630cf7c78523cbd68e5a234743585aa; >= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < 2ff3ac6f7664fe5639cad01712ac5e021fa7939c; >= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < 164dcbec9632ca93ae313e6da6e4e05584fa0f02; >= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < 05ef77f02607a3dc5d7f9762cb990f76843315d4; >= 342fbb7578d1741ff646d7b08e14e8753267b9fa, < f63ad68e18d774a5d15cd7e405ead63f6b322679
LinuxLinux5.11

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-64243?
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.
How severe is CVE-2026-64243?
CVE-2026-64243 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.12% probability of exploitation in the next 30 days.
How do I fix CVE-2026-64243?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST