CVE-2026-80583
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | c39667ddcfc516fee084e449179d54430a558298 < 3ee3c26ceee562079596abc9bc3307dd56dab4ed | affected |
| Linux | Linux | c39667ddcfc516fee084e449179d54430a558298 < 1ba381759e45d5d0442452cfa5c42e836191a568 | affected |
| Linux | Linux | 5.12 | affected |
| Linux | Linux | 0 < 5.12 | unaffected |
| Linux | Linux | 7.1.10 <= 7.1.* | unaffected |
| Linux | Linux | 7.2 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/3ee3c26ceee562079596abc9bc3307dd56dab4ed
- https://git.kernel.org/stable/c/1ba381759e45d5d0442452cfa5c42e836191a568
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