Linux Kernel ASoC Simple-Mux Enum Control Bounds Check Bypass
CVE-2026-64243 Published on July 24, 2026
ASoC: codecs: simple-mux: Fix enum control bounds check
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.
Products Associated with CVE-2026-64243
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Affected Versions
Linux:- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below 6fb653b62f169f6050fac45b56bf21ad097e19f6 is affected.
- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below d8cc3e747b002a8b965c529de79c0654675b9a1a is affected.
- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below 5fe860af8630cf7c78523cbd68e5a234743585aa is affected.
- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below 2ff3ac6f7664fe5639cad01712ac5e021fa7939c is affected.
- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below 164dcbec9632ca93ae313e6da6e4e05584fa0f02 is affected.
- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below 05ef77f02607a3dc5d7f9762cb990f76843315d4 is affected.
- Version 342fbb7578d1741ff646d7b08e14e8753267b9fa and below f63ad68e18d774a5d15cd7e405ead63f6b322679 is affected.
- Version 5.11 is affected.
- Before 5.11 is unaffected.
- Version 5.15.210, <= 5.15.* is unaffected.
- Version 6.1.176, <= 6.1.* is unaffected.
- Version 6.6.143, <= 6.6.* is unaffected.
- Version 6.12.93, <= 6.12.* is unaffected.
- Version 6.18.35, <= 6.18.* is unaffected.
- Version 7.0.12, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.