What is the CVSS score of CVE-2026-31776?

CVE-2026-31776 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of Linux Kernel are affected by CVE-2026-31776?

CVE-2026-31776 is a high-severity kernel vulnerability in the Linux ALSA audio driver that allows authenticated local users to execute arbitrary code on affected systems.. A patch is available.

Linux Kernel CVE-2026-31776

EUVD-2026-26589 HIGH

Improper Validation of Array Index (CWE-129)

2026-05-01 Linux

Buffer Overflow Linux Red Hat Suse

7.8

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

May 07, 2026 - 05:01 vuln.today

CVSS changed

May 07, 2026 - 02:50 NVD

7.8 (HIGH)

Patch released

May 02, 2026 - 07:16 nvd

Patch available

May 01, 2026 - 16:33 EUVD

EUVD ID Assigned

May 01, 2026 - 15:00 euvd

EUVD-2026-26589

CVE Published

May 01, 2026 - 14:15 nvd

HIGH 7.8

CVE Published

May 01, 2026 - 14:15 nvd

N/A

DescriptionNVD

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.

AnalysisAI

Out-of-bounds array access in Linux kernel ALSA ctxfi driver allows local authenticated users to achieve arbitrary code execution with high integrity and confidentiality impact. The flaw stems from improper SPDIF1 DAIO type handling in daio_device_index() for hw20k2 hardware, which returns -EINVAL instead of a valid index, leading to buffer overflow conditions (CWE-129). …

RemediationAI

Within 24 hours: identify all Linux systems running kernel versions 5.10.0-5.10.252, 5.15.0-5.15.202, 6.1.0-6.1.167, 6.6.0-6.6.133, 6.12.0-6.12.80, 6.18.0-6.18.21, 6.19.0-6.19.11, or 7.0.0-7.0.0 (latest affected) with ALSA ctxfi audio drivers enabled. Within 7 days: apply vendor-released patches to upgrade to kernel versions 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, or 7.0.1+ respectively; prioritize systems with audio hardware support enabled. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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CVE-2026-31776 vulnerability details – vuln.today

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Linux Kernel CVE-2026-31776

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

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