CVE-2026-80583

Summary

In the Linux kernel, the following vulnerability has been resolved:

ASoC: codecs: lpass-tx-macro: Fix enum kcontrol accesses

The "DEC0 MODE" to "DEC7 MODE" controls are enumerated, but tx_macro_dec_mode_get() and tx_macro_dec_mode_put() access their value through ucontrol->value.integer.value[0] (a long) instead of ucontrol->value.enumerated.item[0] (an unsigned int).

This same pattern was fixed in the sibling drivers by commit bcfe5f76cc40 ("ASoC: codecs: rx-macro: fix accessing array out of bounds for enum type") and commit 0ea5eff7c606 ("ASoC: codecs: va-macro: fix accessing array out of bounds for enum type"), but tx-macro was missed.

On 64-bit kernels built with CONFIG_SND_CTL_DEBUG, the elem value sanity check catches the 4 bytes written past the enumerated item and every read of these controls fails with -EINVAL:

snd-sm8250 sound: control 2:0:0:DEC0 MODE:0: access overflow

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < dbc81b518f6936131bfd858be71cd4295136809caffected
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < f84f2c81d792cf1e65571108a3bdd2c29e09e995affected
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < 48b76879f5bfc8584b99052510ac645c6ade8d2baffected
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < 2ed3601e9db08fbdb071bd3d7bd8f115d6d871b0affected
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < b6baab796d11fb84c0e9444ffca91af5eab22c25affected
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < 3ee3c26ceee562079596abc9bc3307dd56dab4edaffected
LinuxLinuxc39667ddcfc516fee084e449179d54430a558298 < 1ba381759e45d5d0442452cfa5c42e836191a568affected
LinuxLinux5.12affected
LinuxLinux0 < 5.12unaffected
LinuxLinux5.15.218 <= 5.15.*unaffected
LinuxLinux6.1.185 <= 6.1.*unaffected
LinuxLinux6.6.154 <= 6.6.*unaffected
LinuxLinux6.12.106 <= 6.12.*unaffected
LinuxLinux6.18.47 <= 6.18.*unaffected
LinuxLinux7.1.10 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References