UnratedFix available
ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES parse_uac2_sample_rate_range() caps the number of enumerated rates at MAX_NR_RATES, but it only breaks out of the current rate loop. A malformed UAC2 RANGE response with additional triplets continues parsing the remaining triplets and repeatedly prints "invalid uac2 rates" while probe still holds register_mutex. Stop the whole parse once the cap is reached and return the number of rates collected so far.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.258, 5.15.209, 6.1.175, 6.12.86, 6.18.27, 6.6.140, 7.0.4
- CVEs
- CVE-2026-46018
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 00:44 UTC · Revision 1
Source evidence
ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES
core-osv · Original sourcePublished 27 May 2026, 12:56 UTC
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES parse_uac2_sample_rate_range() caps the number of enumerated rates at MAX_NR_RATES, but it only breaks out of the current rate loop. A malformed UAC2 RANGE response with additional triplets continues parsing the remaining triplets and repeatedly prints "invalid uac2 rates" while probe still holds register_mutex. Stop the whole parse once the cap is reached and return the number of rates collected so far.
osv:CVE-2026-46018
Kernel
Fixed versions: 5.10.258, 5.15.209, 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4
Complete source record
{
"id": "8f2dddc82f6cce69cd67fccb90e85a8c0a430f5a3d563678c2307e2034d7d594",
"url": "https://osv.dev/vulnerability/CVE-2026-46018",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES",
"summary": "In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: stop parsing UAC2 rates at MAX_NR_RATES parse_uac2_sample_rate_range() caps the number of enumerated rates at MAX_NR_RATES, but it only breaks out of the current rate loop. A malformed UAC2 RANGE response with additional triplets continues parsing the remaining triplets and repeatedly prints \"invalid uac2 rates\" while probe still holds register_mutex. Stop the whole parse once the cap is reached and return the number of rates collected so far.",
"evidence": "osv:CVE-2026-46018",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.10.258",
"evidence": "/affected/1/ranges"
},
{
"value": "5.15.209",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.175",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.140",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.86",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.27",
"evidence": "/affected/1/ranges"
},
{
"value": "7.0.4",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-46018",
"aliases": [
"CVE-2026-46018"
],
"affected": [
{
"ranges": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "4fa0e81b83503900be277e6273a79651b375e288"
},
{
"fixed": "5436bc1b07d4656f99412dc72871d250d7d55205"
},
{
"fixed": "0da05fedf5e1966b7e7d389866cb86fcf09f4b32"
},
{
"fixed": "f14bd323eec4b4f0ef662520ec852e593ece1d4c"
},
{
"fixed": "ab5ba9fd138758ddc50222264ff246b31e397abf"
},
{
"fixed": "ba036305323814ec1f8655313b2fa6a0f7048716"
},
{
"fixed": "4d7893a137eadb6163ea4298bf67d74b811d76ef"
},
{
"fixed": "a0b78639ef09b2e77974a3de3b1c07f6de3c5e56"
},
{
"fixed": "3c318f97dcc50b2e0556a1813bd6958678e881fd"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "3.0.81"
},
{
"fixed": "3.1"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "3.2.47"
},
{
"fixed": "3.3"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "44f059fb742aac78cffdab5e0d8fe0c9910c1ded"
}
]
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"type": "GIT",
"events": [
{
"introduced": "c25a53781f61c78bf2a2fa308bbd35b42ba346f6"
}
]
}
],
"versions": [
"v3.0.101",
"v3.0.100",
"v3.0.99",
"v3.0.98",
"v3.0.97",
"v3.0.96",
"v3.0.95",
"v3.0.94",
"v3.0.93",
"v3.0.92",
"v3.0.91",
"v3.0.90",
"v3.0.89",
"v3.0.88",
"v3.0.87",
"v3.0.86",
"v3.0.85",
"v3.0.84",
"v3.0.83",
"v3.0.82",
"v3.0.81",
"v3.2.102",
"v3.2.101",
"v3.2.100",
"v3.2.99",
"v3.2.98",
"v3.2.97",
"v3.2.96",
"v3.2.95",
"v3.2.94",
"v3.2.93",
"v3.2.92",
"v3.2.91",
"v3.2.90",
"v3.2.89",
"v3.2.88",
"v3.2.87",
"v3.2.86",
"v3.2.85",
"v3.2.84",
"v3.2.83",
"v3.2.82",
"v3.2.81",
"v3.2.80",
"v3.2.79",
"v3.2.78",
"v3.2.77",
"v3.2.76",
"v3.2.75",
"v3.2.74",
"v3.2.73",
"v3.2.72",
"v3.2.71",
"v3.2.70",
"v3.2.69",
"v3.2.68",
"v3.2.67",
"v3.2.66",
"v3.2.65",
"v3.2.64",
"v3.2.63",
"v3.2.62",
"v3.2.61",
"v3.2.60",
"v3.2.59",
"v3.2.58",
"v3.2.57",
"v3.2.56",
"v3.2.55",
"v3.2.54",
"v3.2.53",
"v3.2.52",
"v3.2.51",
"v3.2.50",
"v3.2.49",
"v3.2.48",
"v3.2.47"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46018.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "3.3.0"
},
{
"fixed": "5.10.258"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.11.0"
},
{
"fixed": "5.15.209"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "5.16.0"
},
{
"fixed": "6.1.175"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.6.140"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.7.0"
},
{
"fixed": "6.12.86"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
},
{
"fixed": "6.18.27"
}
]
},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.19.0"
},
{
"fixed": "7.0.4"
}
]
}
],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46018.json"
}
}
],
"modified": "2026-10-28T02:30:24.745563868Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/html/ssa-784472.html",
"https://git.kernel.org/stable/c/0da05fedf5e1966b7e7d389866cb86fcf09f4b32",
"https://git.kernel.org/stable/c/3c318f97dcc50b2e0556a1813bd6958678e881fd",
"https://git.kernel.org/stable/c/4d7893a137eadb6163ea4298bf67d74b811d76ef",
"https://git.kernel.org/stable/c/5436bc1b07d4656f99412dc72871d250d7d55205",
"https://git.kernel.org/stable/c/a0b78639ef09b2e77974a3de3b1c07f6de3c5e56",
"https://git.kernel.org/stable/c/ab5ba9fd138758ddc50222264ff246b31e397abf",
"https://git.kernel.org/stable/c/ba036305323814ec1f8655313b2fa6a0f7048716",
"https://git.kernel.org/stable/c/f14bd323eec4b4f0ef662520ec852e593ece1d4c",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46018.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-46018",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46018.json"
}
},
"related_cves": [
{
"value": "CVE-2026-46018",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 491295,
"published_at": "2026-05-27T12:56:19.588+00:00"
}