CVE-2026-64243
Published Jul 24, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/05ef77f02607a3dc5d7f9762cb990f76843315d4
https://git.kernel.org/stable/c/164dcbec9632ca93ae313e6da6e4e05584fa0f02
https://git.kernel.org/stable/c/2ff3ac6f7664fe5639cad01712ac5e021fa7939c
https://git.kernel.org/stable/c/5fe860af8630cf7c78523cbd68e5a234743585aa
https://git.kernel.org/stable/c/6fb653b62f169f6050fac45b56bf21ad097e19f6
https://git.kernel.org/stable/c/d8cc3e747b002a8b965c529de79c0654675b9a1a
https://git.kernel.org/stable/c/f63ad68e18d774a5d15cd7e405ead63f6b322679
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 do I check if I'm vulnerable to CVE-2026-64243? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.