What is CVE-2026-31392?

CVE-2026-31392 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2026-04-03.

How severe is CVE-2026-31392?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Linux

CVE-2026-31392

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix krb5 mount with username option Customer reported that some of their krb5 mounts were failing against a single server as the client was trying to mount…

EPSS: 0.000 (4.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L.

Affected products

Linux — versions 2.6.34.12, 7.0, 6.18.20
Linux Linux_kernel — versions 7.0

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)
416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Patch)

Frequently asked questions

What is CVE-2026-31392?: CVE-2026-31392 is a high-severity vulnerability in Linux. CVSS score: 8.1/10. Published 2026-04-03.
How severe is CVE-2026-31392?: High severity. CVSS v3 base score is 8.1 out of 10.