{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-71192",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-31T11:36:51.189Z",
        "datePublished": "2026-02-04T16:00:23.044Z",
        "dateUpdated": "2026-08-05T12:12:29.458Z"
    },
    "containers": {
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            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:12:29.458Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 7,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:L - The vulnerable registration path is reached locally through PXA2xx platform-driver probing or module autoload; network traffic and physical AC’97 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."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/ac97/bus.c"
                    ],
                    "versions": [
                        {
                            "version": "74426fbff66eea8e8d1f42c8238c268d1e63a832",
                            "lessThan": "c80f9b3349a99a9d5b295f5bbc23f544c5995ad7",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "74426fbff66eea8e8d1f42c8238c268d1e63a832",
                            "lessThan": "21f8bc5179bed91c3f946adb5e55d717b891960c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "74426fbff66eea8e8d1f42c8238c268d1e63a832",
                            "lessThan": "fcc04c92cbb5497ce67c58dd2f0001bb87f40396",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "74426fbff66eea8e8d1f42c8238c268d1e63a832",
                            "lessThan": "cb73d37ac18bc1716690ff5255a0ef1952827e9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "74426fbff66eea8e8d1f42c8238c268d1e63a832",
                            "lessThan": "830988b6cf197e6dcffdfe2008c5738e6c6c3c0f",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/ac97/bus.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.161",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.121",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.66",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.6",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
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                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.15",
                                    "versionEndExcluding": "6.1.161"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/c80f9b3349a99a9d5b295f5bbc23f544c5995ad7"
                },
                {
                    "url": "https://git.kernel.org/stable/c/21f8bc5179bed91c3f946adb5e55d717b891960c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fcc04c92cbb5497ce67c58dd2f0001bb87f40396"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cb73d37ac18bc1716690ff5255a0ef1952827e9e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/830988b6cf197e6dcffdfe2008c5738e6c6c3c0f"
                }
            ],
            "title": "ALSA: ac97: fix a double free in snd_ac97_controller_register()",
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}