{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-23076",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-23076"
  ],
  "published": "2026-02-04T16:18:56Z",
  "summary": "ALSA: ctxfi: Fix potential OOB access in audio mixer handling",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Fix potential OOB access in audio mixer handling\n\nIn the audio mixer handling code of ctxfi driver, the conf field is\nused as a kind of loop index, and it's referred in the index callbacks\n(amixer_index() and sum_index()).\n\nAs spotted recently by fuzzers, the current code causes OOB access at\nthose functions.\n| UBSAN: array-index-out-of-bounds in /build/reproducible-path/linux-6.17.8/sound/pci/ctxfi/ctamixer.c:347:48\n| index 8 is out of range for type 'unsigned char [8]'\n\nAfter the analysis, the cause was found to be the lack of the proper\n(re-)initialization of conj field.\n\nThis patch addresses those OOB accesses by adding the proper\ninitializations of the loop indices.",
  "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": "6.1.162",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23076"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6524205326e0c1a21263b5c14e48e14ef7e449ae"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/afca7ff5d5d4d63a1acb95461f55ca9a729feedf"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8c1d09806e1441bc6a54b9a4f2818918046d5174"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a8c42d11b0526a89192bd2f79facb4c60c8a1f38"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d77ba72558cd66704f0fb7e0969f697e87c0f71c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/873e2360d247eeee642878fcc3398babff7e387c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/61006c540cbdedea83b05577dc7fb7fa18fe1276"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}