CVE-2026-31776
📛 CVE Title
ALSA: ctxfi: Fix missing SPDIFI1 index handling
Description
In the Linux kernel, the following vulnerability has been resolved: ALSA: ctxfi: Fix missing SPDIFI1 index handling SPDIF1 DAIO type isn't properly handled in daio_device_index() for hw20k2, and it returned -EINVAL, which ended up with the out-of-bounds array access. Follow the hw20k1 pattern and return the proper index for this type, too.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- Linux
- CVSS severity
- high
- CVSS score
- 7.8 / 10
- CVSS vector
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Effective score
- 7.8 / 10 HIGH source: CNA overview
- CWE(s)
- —
- Reserved
- 2026-03-09
- Published
- 2026-05-01 16:15 UTC
- Last updated
- 2026-05-12 00:15 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/31xxx/CVE-2026-31776.json
- Linked Threat
- CVE-2026-31776 — CVE-2026-31776
NVD triage scoring NVD CVE 2.0
Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.
- NVD published
- 2026-05-01 15:16:40 UTC
- NVD last modified
- 2026-05-07 02:27:43 UTC
- NVD CVSS v3.1
- 7.8 / 10 HIGH source: nvd@nist.gov
- NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Exploitability subscore
- 1.8 / 10
- Impact subscore
- 5.9 / 10
- EPSS score
- 0.0001 (probability of exploitation in next 30 days)
- EPSS percentile
- 3.08% vs all CVEs — higher = more likely to be exploited, as of 2026-05-25
NVD-assigned CWE(s):
CWE-129
(differs from the CNA list above)
NVD / KEV / EPSS data refreshed 2026-05-25 14:51 UTC. Re-run the 🛰 Backfill from NVD button above to refresh.
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-26589 - Assigner
- Linux
- Published
- May 1, 2026, 2:15:04 PM
- Updated
- May 11, 2026, 10:15:35 PM
- EUVD base score
- 0.0 / 10
- EUVD-reported EPSS
- 0.0200
- Vendors
- Linux
- Products
-
Linux (patch: 6.12.81)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c8859675f1cf92fe2eb25ef525440702140a0b55)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <5b39985303a639b159dea306a032c08ef22f029d)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <950decf59d4e978b60a792ce0b3e1555a608f489)Linux (patch: 6.19.12)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <28222e13666b5d26bf66563c056069ed32f87b33)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a0b45bdfffce9894b39392d061c14fda24de8b67)Linux (6.19)Linux (patch: 7.0)Linux (patch: 5.15.203)Linux (patch: 0)Linux (patch: 6.18.22)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a3b0e5f84058a9c3d0542a71c2b3a7801e4ee26a)Linux (patch: 5.10.253)Linux (a2dbaeb5c61ef110ceefe0d48fe94d428d3bcf16 <950decf59d4e978b60a792ce0b3e1555a608f489)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b045ab3dff97edae6d538eeff900a34c098761f8)Linux (a2dbaeb5c61ef110ceefe0d48fe94d428d3bcf16 <b045ab3dff97edae6d538eeff900a34c098761f8)Linux (patch: 6.1.168)Linux (1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <57698f184e1afbe054b3cd30e2c43a67c11d7f5e)Linux (patch: 6.6.134)
ENISA description: In the Linux kernel, the following vulnerability has been resolved: ALSA: ctxfi: Fix missing SPDIFI1 index handling SPDIF1 DAIO type isn't properly handled in daio_device_index() for hw20k2, and it returned -EINVAL, which ended up with the out-of-bounds array access. Follow the hw20k1 pattern and return the proper index for this type, too.
Affected products (2)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Linux | Linux |
a2dbaeb5c61ef110ceefe0d48fe94d428d3bcf16 (affected),
a2dbaeb5c61ef110ceefe0d48fe94d428d3bcf16 (affected)
|
— |
| Linux | Linux |
6.19 (affected),
0 (unaffected),
6.19.12 (unaffected),
7.0 (unaffected)
|
— |
Affected products — CPE 2.3 (7) NVD
NVD's normalized CPE 2.3 matchers, used by vendor tools (vulnerability scanners, asset managers) for automated detection. Compare with the CNA's free-text "Affected products" section above.
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
Vendor references (2)
References embedded in the original CVE record by the assigning CNA.
Web references (8)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
- http://cwe.mitre.org/data/definitions/129.html rapid7:cwe.mitre.org
- https://attackerkb.com/topics/CVE-2026-31776 rapid7:attackerkb.com
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-26589 rapid7:euvd.enisa.europa.eu
- https://git.kernel.org/stable/c/950decf59d4e978b60a792ce0b3e1555a608f489 tenable:git.kernel.org
- https://git.kernel.org/stable/c/b045ab3dff97edae6d538eeff900a34c098761f8 tenable:git.kernel.org
- https://nvd.nist.gov/vuln/detail/CVE-2026-31776 tenable:nvd.nist.gov
- https://www.cve.org/CVERecord?id=CVE-2026-31776 tenable:www.cve.org
- https://www.first.org/epss/ tenable:www.first.org
NVD-tagged references (2)
Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.
- https://git.kernel.org/stable/c/950decf59d4e978b60a792ce0b3e1555a608f489 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
- https://git.kernel.org/stable/c/b045ab3dff97edae6d538eeff900a34c098761f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 Patch
Remediations (16)
Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.
-
web:blog.qualys.com
With Qualys Policy Audit's out-of-the-box mitigation or Compensatory Controls, which reduce the risk of a vulnerability being exploited because the remediation ( fix / patch ) cannot be done immediately, these security controls are not recommended by any industry standards, such as CIS and DISA-STIG.
2026-05-23 20:02 UTC -
web:cybersecuritynews.com
Microsoft released its March 2026 Patch Tuesday security update on March 10, 2026 , addressing 78 vulnerabilities across Windows, Microsoft Office, Azure, SQL Server, and .NET. The update includes one actively exploited zero-day vulnerability and multiple Critical-rated flaws demanding immediate attention from security teams. The most urgent fix this month is CVE - 2026 -21262, the sole zero-day ...
2026-05-23 20:02 UTC -
web:krebsonsecurity.com
Microsoft expects that exploitation is more likely. May's Patch Tuesday is a welcome respite from April, which saw Microsoft fix a near-record 167 security flaws.
2026-05-23 20:02 UTC -
web:portal.msrc.microsoft.com
The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.
2026-05-23 20:02 UTC -
web:www.bleepingcomputer.com
Today is Microsoft's February 2026 Patch Tuesday with security updates for 58 flaws, including 6 actively exploited and three publicly disclosed zero-day vulnerabilities.
2026-05-23 20:02 UTC -
web:www.crowdstrike.com
Microsoft's April 2026 Patch Tuesday addresses 164 CVEs , featuring 8 Critical vulnerabilities, one exploited zero-day, and one disclosed zero-day.
2026-05-23 20:02 UTC -
web:www.oracle.com
This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.
2026-05-23 20:02 UTC -
web:www.pcworld.com
Windows 11's Secure Boot fix update finally rolls out to more PCs Important security certificates for Windows 11 will soon expire for many users.
2026-05-23 20:02 UTC -
web:www.windowslatest.com
Windows 11 April 2026 update adds Narrator Copilot support, faster Settings, File Explorer fixes, and key security improvements.
2026-05-23 20:02 UTC -
web:zecurit.com
Get the complete breakdown of Microsoft's May 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .
2026-05-23 20:02 UTC -
web:blog.qualys.com
May 2026's Patch Tuesday arrives with Microsoft addressing a fresh set of vulnerabilities across its ecosystem, reinforcing the ongoing need for timely patching in an increasingly threat-heavy…
2026-06-03 07:49 UTC -
web:cybersecuritynews.com
Microsoft's May 2026 Patch Tuesday lands with a heavy enterprise focus, fixing 120 vulnerabilities across Windows, Office, Azure, developer tools, and Microsoft 365 apps, including 29 remote code execution (RCE) flaws rated Critical.
2026-06-03 07:49 UTC -
web:patchmypc.com
You can find the production release history below for 2026 . View the 2025 Catalog Release History.
2026-06-03 07:49 UTC -
web:www.cisecurity.org
<p>Multiple vulnerabilities have been discovered in Microsoft products, the most severe of which could allow for remote code execution. Successful exploitation of the most severe of these vulnerabilities could result in an attacker gaining the same privileges as the logged-on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or ...
2026-06-03 07:49 UTC -
web:www.vulncheck.com
VulnCheck identified 25 CVEs disclosed in 2026 that have been routinely targeted by adversaries and researchers so far this year, drawing from a global body of exploit code and exploitation data.
2026-06-03 07:49 UTC -
web:www.windowslatest.com
Windows 11 March 2026 Patch Tuesday update adds Emoji 16.0, Sysmon, network speed test, reliability improvements, and security fixes.
2026-06-03 07:49 UTC
AI Forensic Analysis
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-31776.json.
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"product": "Linux",
"programFiles": [
"sound/pci/ctxfi/ctdaio.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
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{
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}
]
},
{
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"programFiles": [
"sound/pci/ctxfi/ctdaio.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.19"
},
{
"lessThan": "6.19",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
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"version": "6.19.12",
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},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.19.12",
"versionStartIncluding": "6.19",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.0",
"versionStartIncluding": "6.19",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: ctxfi: Fix missing SPDIFI1 index handling\n\nSPDIF1 DAIO type isn't properly handled in daio_device_index() for\nhw20k2, and it returned -EINVAL, which ended up with the out-of-bounds\narray access. Follow the hw20k1 pattern and return the proper index\nfor this type, too."
}
],
"providerMetadata": {
"dateUpdated": "2026-05-11T22:15:35.385Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/950decf59d4e978b60a792ce0b3e1555a608f489"
},
{
"url": "https://git.kernel.org/stable/c/b045ab3dff97edae6d538eeff900a34c098761f8"
}
],
"title": "ALSA: ctxfi: Fix missing SPDIFI1 index handling",
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}
}
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"cveId": "CVE-2026-31776",
"datePublished": "2026-05-01T14:15:04.423Z",
"dateReserved": "2026-03-09T15:48:24.140Z",
"dateUpdated": "2026-05-11T22:15:35.385Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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}