{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40275",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.184Z",
        "datePublished": "2025-12-06T21:50:57.914Z",
        "dateUpdated": "2026-05-11T21:46:11.980Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T21:46:11.980Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd\n\nIn snd_usb_create_streams(), for UAC version 3 devices, the Interface\nAssociation Descriptor (IAD) is retrieved via usb_ifnum_to_if(). If this\ncall fails, a fallback routine attempts to obtain the IAD from the next\ninterface and sets a BADD profile. However, snd_usb_mixer_controls_badd()\nassumes that the IAD retrieved from usb_ifnum_to_if() is always valid,\nwithout performing a NULL check. This can lead to a NULL pointer\ndereference when usb_ifnum_to_if() fails to find the interface descriptor.\n\nThis patch adds a NULL pointer check after calling usb_ifnum_to_if() in\nsnd_usb_mixer_controls_badd() to prevent the dereference.\n\nThis issue was discovered by syzkaller, which triggered the bug by sending\na crafted USB device descriptor."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "sound/usb/mixer.c"
                    ],
                    "versions": [
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "9f282104627be5fbded3102ff9004f753c55a063",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "2762d3ea9c929ca4094541ca517c317ffa94625b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "57f607c112966c21240c424b33e2cb71e121dcf0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "cbdbfc756f2990942138ed0138da9303b4dbf9ff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "85568535893600024d7d8794f4f8b6428b521e0c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "17156f23e93c0f59e06dd2aaffd06221341caaee",
                            "lessThan": "632108ec072ad64c8c83db6e16a7efee29ebfb74",
                            "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/usb/mixer.c"
                    ],
                    "versions": [
                        {
                            "version": "4.18",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.18",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.4.302",
                            "lessThanOrEqual": "5.4.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.247",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.197",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.159",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.117",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.59",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.17.9",
                            "lessThanOrEqual": "6.17.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "5.4.302"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "5.10.247"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "5.15.197"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.1.159"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.6.117"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.12.59"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.17.9"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.18",
                                    "versionEndExcluding": "6.18"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/23aea9c74aeea2625aaf4fbcc6beb9d09e30f9e4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c5c08965ab96b16361e69a1e2a0e89dbcb99b5a6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9f282104627be5fbded3102ff9004f753c55a063"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2762d3ea9c929ca4094541ca517c317ffa94625b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/57f607c112966c21240c424b33e2cb71e121dcf0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/cbdbfc756f2990942138ed0138da9303b4dbf9ff"
                },
                {
                    "url": "https://git.kernel.org/stable/c/85568535893600024d7d8794f4f8b6428b521e0c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/632108ec072ad64c8c83db6e16a7efee29ebfb74"
                }
            ],
            "title": "ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}