CVE-2022-49772
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()
snd_usbmidi_output_open() has a check of the NULL port with snd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened, but in reality, the NULL port may be seen when the device gives an invalid endpoint setup at the descriptor, hence the driver skips the allocation. That is, the check itself is valid and snd_BUG_ON() should be dropped from there. Otherwise it's confusing as if it were a real bug, as recently syzbot stumbled on it.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10
- https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db
- https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54
- https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df
- https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7
- https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-49772",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 5.5,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.8
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "738d9edcfd44f154924692e54109fb439fcf8bdd",
"lessThan": "c43991065f36f7628cd124e037b8750c4617a7a7",
"versionType": "git"
},
{
"status": "affected",
"version": "738d9edcfd44f154924692e54109fb439fcf8bdd",
"lessThan": "e7dc436aea80308a9268e6d2d85f910ff107de9b",
"versionType": "git"
},
{
"status": "affected",
"version": "738d9edcfd44f154924692e54109fb439fcf8bdd",
"lessThan": "a80369c8ca50bc885d14386087a834659ec54a54",
"versionType": "git"
},
{
"status": "affected",
"version": "738d9edcfd44f154924692e54109fb439fcf8bdd",
"lessThan": "02b94885b2fdf1808b1874e009bfb90753f8f4db",
"versionType": "git"
},
{
"status": "affected",
"version": "738d9edcfd44f154924692e54109fb439fcf8bdd",
"lessThan": "00f5f1bbf815a39e9eecb468d12ca55d3360eb10",
"versionType": "git"
},
{
"status": "affected",
"version": "738d9edcfd44f154924692e54109fb439fcf8bdd",
"lessThan": "ad72c3c3f6eb81d2cb189ec71e888316adada5df",
"versionType": "git"
}
],
"programFiles": [
"sound/usb/midi.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.19.267",
"versionType": "semver",
"lessThanOrEqual": "4.19.*"
},
{
"status": "unaffected",
"version": "5.4.225",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.156",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.80",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.0.10",
"versionType": "semver",
"lessThanOrEqual": "6.0.*"
},
{
"status": "unaffected",
"version": "6.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/usb/midi.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-05-01T15:16:00.347",
"references": [
{
"url": "https://git.kernel.org/stable/c/00f5f1bbf815a39e9eecb468d12ca55d3360eb10",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/02b94885b2fdf1808b1874e009bfb90753f8f4db",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a80369c8ca50bc885d14386087a834659ec54a54",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ad72c3c3f6eb81d2cb189ec71e888316adada5df",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/c43991065f36f7628cd124e037b8750c4617a7a7",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/e7dc436aea80308a9268e6d2d85f910ff107de9b",
"tags": [
"Patch"
],
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open()\n\nsnd_usbmidi_output_open() has a check of the NULL port with\nsnd_BUG_ON(). snd_BUG_ON() was used as this shouldn't have happened,\nbut in reality, the NULL port may be seen when the device gives an\ninvalid endpoint setup at the descriptor, hence the driver skips the\nallocation. That is, the check itself is valid and snd_BUG_ON()\nshould be dropped from there. Otherwise it's confusing as if it were\na real bug, as recently syzbot stumbled on it."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ALSA: usb-audio: Se omite snd_BUG_ON() de snd_usbmidi_output_open(). snd_usbmidi_output_open() tiene una comprobación del puerto nulo con snd_BUG_ON(). Se usó snd_BUG_ON() porque esto no debería haber ocurrido, pero en realidad, el puerto nulo puede detectarse cuando el dispositivo proporciona una configuración de endpoint no válida en el descriptor, por lo que el controlador omite la asignación. Es decir, la comprobación en sí es válida y snd_BUG_ON() debería omitirse. De lo contrario, es confuso, como si se tratara de un error real, como lo detectó syzbot recientemente."
}
],
"lastModified": "2026-06-17T05:19:06.627",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "65416FEB-3A76-4DA9-A96A-1479EC77AFB6",
"versionEndExcluding": "4.9.334"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "424802D2-E9E7-48A9-AD6F-DF2227B3D83A",
"versionEndExcluding": "4.14.300",
"versionStartIncluding": "4.10"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A5C69A12-68E2-400E-9A5A-375A673C8402",
"versionEndExcluding": "4.19.267",
"versionStartIncluding": "4.15"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "94D21814-3051-4860-AB06-C7880A3D4933",
"versionEndExcluding": "5.4.225",
"versionStartIncluding": "4.20"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E2152F3D-E6D3-405D-B0BE-911B8B6E2EE6",
"versionEndExcluding": "5.10.156",
"versionStartIncluding": "5.5"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "51BBEF3B-79F5-4D4C-ADBA-F34DA0E2465C",
"versionEndExcluding": "5.15.80",
"versionStartIncluding": "5.11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "64F9ADD1-3ADB-4D66-A00F-4A83010B05F0",
"versionEndExcluding": "6.0.10",
"versionStartIncluding": "5.16"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}