CVE-2026-43436 (GCVE-0-2026-43436)
Vulnerability from cvelistv5 – Published: 2026-05-08 14:22 – Updated: 2026-05-11 22:24
VLAI
EPSS
VEX
Title
ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces
Summary
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces
The Scarlett2 mixer quirk in USB-audio driver may hit a NULL
dereference when a malformed USB descriptor is passed, since it
assumes the presence of an endpoint in the parsed interface in
scarlett2_find_fc_interface(), as reported by fuzzer.
For avoiding the NULL dereference, just add the sanity check of
bNumEndpoints and skip the invalid interface.
Severity
5.5 (Medium)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
6c0a2078134aba6a77291554035304df9e16b85c , < b014cc945baba75816cda0cf8934be87c9ed4947
(git)
Affected: 6c0a2078134aba6a77291554035304df9e16b85c , < c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba (git) Affected: 6c0a2078134aba6a77291554035304df9e16b85c , < b267255c15d2a5b90c4e926146aa155e5161e264 (git) Affected: 6c0a2078134aba6a77291554035304df9e16b85c , < 3d542cf3c4c854cdf5d58049771f68926b9eb2b9 (git) Affected: 6c0a2078134aba6a77291554035304df9e16b85c , < 3d4f23885e4b90347c9a1d779af6e79a99b5172a (git) Affected: 6c0a2078134aba6a77291554035304df9e16b85c , < df1d8abf36ca3681c21a6809eaa9a1e01ef897a6 (git) |
guessed | |
| Linux | Linux |
Affected:
5.14
Unaffected: 0 , < 5.14 (semver) Unaffected: 6.1.167 , ≤ 6.1.* (semver) Unaffected: 6.6.130 , ≤ 6.6.* (semver) Unaffected: 6.12.78 , ≤ 6.12.* (semver) Unaffected: 6.18.19 , ≤ 6.18.* (semver) Unaffected: 6.19.9 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
"cna": {
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{
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"product": "Linux",
"programFiles": [
"sound/usb/mixer_scarlett2.c"
],
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"sound/usb/mixer_scarlett2.c"
],
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"vendor": "Linux",
"versions": [
{
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},
{
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"version": "0",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.1.167",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.6.130",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.78",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.19",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.9",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
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"providerMetadata": {
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"url": "https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba"
},
{
"url": "https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264"
},
{
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},
{
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},
{
"url": "https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6"
}
],
"title": "ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces",
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"cveId": "CVE-2026-43436",
"datePublished": "2026-05-08T14:22:06.632Z",
"dateReserved": "2026-05-01T14:12:56.009Z",
"dateUpdated": "2026-05-11T22:24:33.336Z",
"state": "PUBLISHED"
},
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"date": "2026-09-13",
"epss": "0.00123",
"percentile": "0.02319"
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-03T14:58:06+00:00",
"cve": "CVE-2026-43436",
"id": "CVE-2026-43436",
"initial_release_date": "2026-05-08T00:00:00+00:00",
"product_status:known_affected": "232",
"product_status:known_not_affected": "42",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43436.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-08-31T17:04:17Z",
"cve": "CVE-2026-43436",
"id": "CVE-2026-43436",
"initial_release_date": "2026-05-13T03:34:00Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "528",
"product_status:known_not_affected": "190",
"product_status:recommended": "250",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-43436",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43436.json",
"version": "7"
}
}
}
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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.
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.
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