GHSA-4JRC-26J5-HV3J
Vulnerability from github – Published: 2026-08-27 06:31 – Updated: 2026-08-27 15:31In 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": [],
"aliases": [
"CVE-2026-80583"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-26T15:17:14Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: lpass-tx-macro: Fix enum kcontrol accesses\n\nThe \"DEC0 MODE\" to \"DEC7 MODE\" controls are enumerated, but\ntx_macro_dec_mode_get() and tx_macro_dec_mode_put() access their\nvalue through ucontrol-\u003evalue.integer.value[0] (a long) instead of\nucontrol-\u003evalue.enumerated.item[0] (an unsigned int).\n\nThis same pattern was fixed in the sibling drivers by\ncommit bcfe5f76cc40 (\"ASoC: codecs: rx-macro: fix accessing array\nout of bounds for enum type\") and\ncommit 0ea5eff7c606 (\"ASoC: codecs: va-macro: fix accessing array\nout of bounds for enum type\"), but tx-macro was missed.\n\nOn 64-bit kernels built with CONFIG_SND_CTL_DEBUG, the elem value\nsanity check catches the 4 bytes written past the enumerated item\nand every read of these controls fails with -EINVAL:\n\n snd-sm8250 sound: control 2:0:0:DEC0 MODE:0: access overflow",
"id": "GHSA-4jrc-26j5-hv3j",
"modified": "2026-08-27T15:31:33Z",
"published": "2026-08-27T06:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80583"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1ba381759e45d5d0442452cfa5c42e836191a568"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ed3601e9db08fbdb071bd3d7bd8f115d6d871b0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3ee3c26ceee562079596abc9bc3307dd56dab4ed"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/48b76879f5bfc8584b99052510ac645c6ade8d2b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b6baab796d11fb84c0e9444ffca91af5eab22c25"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dbc81b518f6936131bfd858be71cd4295136809c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f84f2c81d792cf1e65571108a3bdd2c29e09e995"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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