SB2026082755 - Out-of-bounds write in Linux kernel soc codecs

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds write (CVE-ID: CVE-2026-80583)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to disclose sensitive information, modify memory, or cause a denial of service.

The vulnerability exists due to an out-of-bounds write in the tx_macro_dec_mode_get() and tx_macro_dec_mode_put() kcontrol handlers in sound/soc/codecs/lpass-tx-macro.c when accessing enumerated control values. A local user can access a crafted enumerated control value through the "DEC0 MODE" to "DEC7 MODE" controls to disclose sensitive information, modify memory, or cause a denial of service.

On 64-bit kernels built with CONFIG_SND_CTL_DEBUG, the issue is detected as an access overflow and reads of these controls fail with -EINVAL.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1ba381759e45d5d0442452cfa5c42e836191a568
• https://git.kernel.org/stable/c/3ee3c26ceee562079596abc9bc3307dd56dab4ed