{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80583",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-80583"
  ],
  "published": "2026-08-26T14:37:59Z",
  "summary": "ASoC: codecs: lpass-tx-macro: Fix enum kcontrol accesses",
  "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->value.integer.value[0] (a long) instead of\nucontrol->value.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",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.185",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80583"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dbc81b518f6936131bfd858be71cd4295136809c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f84f2c81d792cf1e65571108a3bdd2c29e09e995"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/48b76879f5bfc8584b99052510ac645c6ade8d2b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2ed3601e9db08fbdb071bd3d7bd8f115d6d871b0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b6baab796d11fb84c0e9444ffca91af5eab22c25"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ee3c26ceee562079596abc9bc3307dd56dab4ed"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1ba381759e45d5d0442452cfa5c42e836191a568"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-27T12:40:42Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - Exploitation requires local SNDRV_CTL_IOCTL_ELEM_READ or SNDRV_CTL_IOCTL_ELEM_WRITE on /dev/snd/controlC* through snd_ctl_ioctl() to tx_macro_dec_mode_get/put(); the Qualcomm LPASS TX macro audio codec driver has no network, Bluetooth, or physical-input attack path.\nAC:L - A single ioctl targeting DEC0-7 MODE deterministically triggers the 8-byte integer access against a 4-byte enumerated field on 64-bit kernels; the attacker controls both sides with no race, timing, or memory-layout dependency.\nPR:L - snd_ctl_open() performs no capability check; exploitation needs only local access to /dev/snd/controlC*, typically granted to the audio group on Qualcomm sc8250/sc8280 Chromebooks and Linux dev boards where this driver is present, not real root.\nUI:N - Once the attacker has ALSA control-device access they issue elem read/write ioctls themselves to DEC MODE controls; no separate victim action such as plugging hardware or opening a file is required.\nS:U - The out-of-bounds ctl-value access and resulting microphone ADC mode corruption remain within the host kernel and Qualcomm audio subsystem; there is no crossing of VM, container, or IOMMU security boundaries.\nC:H - tx_macro_dec_mode_put() reads ucontrol->value.integer.value[0] (8 bytes) for ENUM controls, performing a 4-byte out-of-bounds read past enumerated.item[0]; per kernel CVSS guidance out-of-bounds reads are scored High even when bounded.\nI:H - tx_macro_dec_mode_get() writes 8 bytes via integer.value[0], overflowing enumerated.item[0] by 4 bytes in kernel memory; put stores values into tx->dec_mode[] that program CDC_TXn_ADC_MODE on phone/Chromebook microphones, constituting memory corruption scored High.\nA:H - With CONFIG_SND_CTL_DEBUG every DEC0-7 MODE read fails with -EINVAL (access overflow), denying microphone ADC queries; on production 64-bit aarch64 builds the 4-byte union overrun corrupts ctl values and can break Qualcomm LPASS TX audio capture availability."
    }
  }
}