CVE-2025-68783
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-mixer: us16x08: validate meter packet indices
get_meter_levels_from_urb() parses the 64-byte meter packets sent by the device and fills the per-channel arrays meter_level[], comp_level[] and master_level[] in struct snd_us16x08_meter_store.
Currently the function derives the channel index directly from the meter packet (MUB2(meter_urb, s) - 1) and uses it to index those arrays without validating the range. If the packet contains a negative or out-of-range channel number, the driver may write past the end of these arrays.
Leer descripción completaMostrar menos
Introduce a local channel variable and validate it before updating the arrays. We reject negative indices, limit meter_level[] and comp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[] updates with ARRAY_SIZE(master_level).
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/2168866396bd28ec4f3c8da0fbc7d08b5bd4f053
- https://git.kernel.org/stable/c/2f21a7cbaaa93926f5be15bc095b9c57c35748d9
- https://git.kernel.org/stable/c/53461710a95e15ac1f6542450943a492ecf8e550
- https://git.kernel.org/stable/c/5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e
- https://git.kernel.org/stable/c/a8ad320efb663be30b794e3dd3e829301c0d0ed3
- https://git.kernel.org/stable/c/cde47f4ccad6751ac36b7471572ddf38ee91870c
- https://git.kernel.org/stable/c/eaa95228b8a56c4880a182c0350d67922b22408f
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-68783",
"cveTags": [],
"metrics": {},
"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": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "53461710a95e15ac1f6542450943a492ecf8e550",
"versionType": "git"
},
{
"status": "affected",
"version": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "2168866396bd28ec4f3c8da0fbc7d08b5bd4f053",
"versionType": "git"
},
{
"status": "affected",
"version": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "cde47f4ccad6751ac36b7471572ddf38ee91870c",
"versionType": "git"
},
{
"status": "affected",
"version": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "2f21a7cbaaa93926f5be15bc095b9c57c35748d9",
"versionType": "git"
},
{
"status": "affected",
"version": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "a8ad320efb663be30b794e3dd3e829301c0d0ed3",
"versionType": "git"
},
{
"status": "affected",
"version": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "eaa95228b8a56c4880a182c0350d67922b22408f",
"versionType": "git"
},
{
"status": "affected",
"version": "d2bb390a2081a36ffe906724d2848d846f2aeb29",
"lessThan": "5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e",
"versionType": "git"
}
],
"programFiles": [
"sound/usb/mixer_us16x08.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.248",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.198",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.160",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.120",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.64",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.3",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"sound/usb/mixer_us16x08.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-01-13T16:15:58.000",
"references": [
{
"url": "https://git.kernel.org/stable/c/2168866396bd28ec4f3c8da0fbc7d08b5bd4f053",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/2f21a7cbaaa93926f5be15bc095b9c57c35748d9",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/53461710a95e15ac1f6542450943a492ecf8e550",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/5526c1c6ba1d0913c7dfcbbd6fe1744ea7c55f1e",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a8ad320efb663be30b794e3dd3e829301c0d0ed3",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/cde47f4ccad6751ac36b7471572ddf38ee91870c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/eaa95228b8a56c4880a182c0350d67922b22408f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-mixer: us16x08: validate meter packet indices\n\nget_meter_levels_from_urb() parses the 64-byte meter packets sent by\nthe device and fills the per-channel arrays meter_level[],\ncomp_level[] and master_level[] in struct snd_us16x08_meter_store.\n\nCurrently the function derives the channel index directly from the\nmeter packet (MUB2(meter_urb, s) - 1) and uses it to index those\narrays without validating the range. If the packet contains a\nnegative or out-of-range channel number, the driver may write past\nthe end of these arrays.\n\nIntroduce a local channel variable and validate it before updating the\narrays. We reject negative indices, limit meter_level[] and\ncomp_level[] to SND_US16X08_MAX_CHANNELS, and guard master_level[]\nupdates with ARRAY_SIZE(master_level)."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nALSA: usb-mixer: us16x08: validar los índices de los paquetes de medidor\n\nget_meter_levels_from_urb() analiza los paquetes de medidor de 64 bytes enviados por el dispositivo y rellena los arrays por canal meter_level[], comp_level[] y master_level[] en la estructura snd_us16x08_meter_store.\n\nActualmente, la función deriva el índice del canal directamente del paquete de medidor (MUB2(meter_urb, s) - 1) y lo usa para indexar esos arrays sin validar el rango. Si el paquete contiene un número de canal negativo o fuera de rango, el controlador puede escribir más allá del final de estos arrays.\n\nIntroduce una variable de canal local y valídala antes de actualizar los arrays. Rechazamos los índices negativos, limitamos meter_level[] y comp_level[] a SND_US16X08_MAX_CHANNELS, y protegemos las actualizaciones de master_level[] con ARRAY_SIZE(master_level)."
}
],
"lastModified": "2026-06-17T09:59:34.920",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}