How severe is CVE-2026-31776?

CVE-2026-31776 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-31776 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31776?

CVE-2026-31776 primarily affects Linux Linux Kernel. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-31776?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-31776 have an EU (EUVD) identifier?

Yes. CVE-2026-31776 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26589.

When was CVE-2026-31776 published?

CVE-2026-31776 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-31776

CVE-2026-31776 is a high-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-129.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26589
Weakness: CWE-129
Affected product: Linux Linux Kernel
Published: 2026-05-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-31776?: 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.
How severe is CVE-2026-31776?: CVE-2026-31776 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-31776 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31776?: CVE-2026-31776 primarily affects Linux Linux Kernel. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-31776?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-31776 have an EU (EUVD) identifier?: Yes. CVE-2026-31776 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26589.
When was CVE-2026-31776 published?: CVE-2026-31776 was published on 2026-05-01 and last updated on 2026-06-17.

References

Affected products (7)

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:*:*:*:*:*:*

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