Out-of-bounds write in Linux kernel - CVE-2026-80583
Published: August 27, 2026
Vulnerability identifier: #VU145909
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-80583
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-80583
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.107-1
linux (Debian package) - update to 6.12.107-1