{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-71192",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2025-71192"
  ],
  "published": "2026-02-04T16:00:51Z",
  "summary": "ALSA: ac97: fix a double free in snd_ac97_controller_register()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ac97: fix a double free in snd_ac97_controller_register()\n\nIf ac97_add_adapter() fails, put_device() is the correct way to drop\nthe device reference. kfree() is not required.\nAdd kfree() if idr_alloc() fails and in ac97_adapter_release() to do\nthe cleanup.\n\nFound by code review.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:L/AC:H/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": "6.1.161",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-71192"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c80f9b3349a99a9d5b295f5bbc23f544c5995ad7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/21f8bc5179bed91c3f946adb5e55d717b891960c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fcc04c92cbb5497ce67c58dd2f0001bb87f40396"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cb73d37ac18bc1716690ff5255a0ef1952827e9e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/830988b6cf197e6dcffdfe2008c5738e6c6c3c0f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T12:19:11Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 7.0,
      "cvss_v3_severity": "High",
      "scenario": "AV:L - The vulnerable registration path is reached locally through PXA2xx platform-driver probing or module autoload; network traffic and physical AC\u201997 input cannot reach it.\nAC:H - Exploitation requires the uncommon condition that device registration fail after device initialization, plus favorable heap reuse; an attacker can encourage memory pressure but cannot reliably control these conditions.\nPR:L - A basic local user can initiate ALSA autoload activity and shape memory pressure while kernel or udev performs probing; no attacker-held administrative capability is checked by the vulnerable function.\nUI:N - No separate victim action is required once platform probing or module autoload begins.\nS:U - The corruption occurs within the host kernel and does not cross a separate virtualization, IOMMU, or other security authority.\nC:H - Reusing the multiply freed controller allocation can overlap its embedded struct device with attacker-influenced heap objects, enabling disclosure of kernel pointers and potentially arbitrary kernel memory.\nI:H - Freelist corruption and overlapping allocations can modify kernel objects, including device release and type function pointers, making arbitrary writes and kernel code execution defensible.\nA:H - The double free can immediately trigger allocator corruption detection, an oops, or a kernel panic, and corrupted reuse can crash the system later."
    }
  }
}