CVE-2026-46146 (GCVE-0-2026-46146)
Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-06-14 17:57
VLAI
EPSS
VEX
Title
ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()
Summary
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()
The convert_chmap_v3() has a loop with its increment size of
cs_desc->wLength, but we forgot to validate cs_desc->wLength itself,
which may lead to potential endless loop by a malformed descriptor.
Add a proper size check to abort the loop for plugging the hole.
Severity
5.5 (Medium)
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
786571b10b1ae6d90e1242848ce78ee7e1d493c4 , < 076d5d13eb9c1ad259a7f246149f6676c62285f9
(git)
Affected: 275e37532e8ebe25e8a4069b2d9f955bfd202a46 , < 316aa0b1e3c5600eae5ab876394c1ac70e6db581 (git) Affected: 47ab3d820cb0a502bd0074f83bb3cf7ab5d79902 , < 24a40df79307ca7ca0eec0889361cf6ac146d72a (git) Affected: 1034719fdefd26caeec0a44a868bb5a412c2c1a5 , < e0e3dcf48189603f3865f1a0b799b3b42baae96d (git) Affected: ae17b3b5e753efc239421d186cd1ff06e5ac296e , < 4e0ee232ebe3df04874125d7c7f3e6c25ea5483d (git) Affected: ecfd41166b72b67d3bdeb88d224ff445f6163869 , < be09b47ed8677d76962e3240c145502e2ad9f3c8 (git) Affected: ecfd41166b72b67d3bdeb88d224ff445f6163869 , < fa5b19ce69067874b1413f3c2027563bae8c2cb3 (git) Affected: ecfd41166b72b67d3bdeb88d224ff445f6163869 , < 6e7247d8f5fefeceb0bb9cc80a5388a636b219cd (git) Affected: 799c06ad4c9c790c265e8b6b94947213f1fb389c (git) Affected: dfdcbcde5c20df878178245d4449feada7d5b201 (git) Affected: 7ef3fd250f84494fb2f7871f357808edaa1fc6ce (git) Affected: 5.10.241 , < 5.10.258 (semver) Affected: 5.15.190 , < 5.15.209 (semver) Affected: 6.1.149 , < 6.1.175 (semver) Affected: 6.6.103 , < 6.6.140 (semver) Affected: 6.12.43 , < 6.12.88 (semver) Affected: 5.4.297 , < 5.5 (semver) Affected: 6.15.11 , < 6.16 (semver) Affected: 6.16.2 , < 6.17 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.17
Unaffected: 0 , < 6.17 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed |
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"matchCriteriaId": "7CC8B11D-82DC-4958-8DC7-BF5CC829A5E9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc2:*:*:*:*:*:*",
"matchCriteriaId": "C730CD9A-D969-4A8E-9522-162AAF7C0EE9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc3:*:*:*:*:*:*",
"matchCriteriaId": "39982C4B-716E-4B2F-8196-FA301F47807D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*",
"matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*",
"matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc6:*:*:*:*:*:*",
"matchCriteriaId": "5A4516A6-C12E-42A4-8C0E-68AEF3264504",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc7:*:*:*:*:*:*",
"matchCriteriaId": "3963C3A0-CEA1-4F5C-8011-3A593ABB684D",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
"matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()\n\nThe convert_chmap_v3() has a loop with its increment size of\ncs_desc-\u003ewLength, but we forgot to validate cs_desc-\u003ewLength itself,\nwhich may lead to potential endless loop by a malformed descriptor.\n\nAdd a proper size check to abort the loop for plugging the hole."
}
],
"id": "CVE-2026-46146",
"lastModified": "2026-06-17T10:53:08.847",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2026-05-28T10:16:30.203",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/076d5d13eb9c1ad259a7f246149f6676c62285f9"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/24a40df79307ca7ca0eec0889361cf6ac146d72a"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/316aa0b1e3c5600eae5ab876394c1ac70e6db581"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/4e0ee232ebe3df04874125d7c7f3e6c25ea5483d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/6e7247d8f5fefeceb0bb9cc80a5388a636b219cd"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/be09b47ed8677d76962e3240c145502e2ad9f3c8"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/e0e3dcf48189603f3865f1a0b799b3b42baae96d"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
],
"url": "https://git.kernel.org/stable/c/fa5b19ce69067874b1413f3c2027563bae8c2cb3"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-835"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-06-28T07:41:04+00:00",
"cve": "CVE-2026-46146",
"id": "CVE-2026-46146",
"initial_release_date": "2026-05-28T00:00:00+00:00",
"product_status:known_affected": "274",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46146.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-16T00:12:49Z",
"cve": "CVE-2026-46146",
"id": "CVE-2026-46146",
"initial_release_date": "2026-05-29T01:16:18Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "428",
"product_status:known_not_affected": "238",
"product_status:recommended": "277",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-46146",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46146.json",
"version": "14"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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