HOMEVULNERABILITIESCVE-2026-31776
HIGH

CVE-2026-31776

Published: May 1, 2026· Updated: May 7, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:5.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-31776 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/950decf59d4e978b60a792ce0b3e1555a608f489
PATCHhttps://git.kernel.org/stable/c/b045ab3dff97edae6d538eeff900a34c098761f8

All References (2)

→
https://git.kernel.org/stable/c/950decf59d4e978b60a792ce0b3e1555a608f489Patch
→
https://git.kernel.org/stable/c/b045ab3dff97edae6d538eeff900a34c098761f8Patch

Quick Facts

CVE IDCVE-2026-31776
CVSS Score7.8 / 10
SeverityHIGH
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedMay 1, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31776 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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