CVE-2026-31483

MediumCVSS 5.5/10Last modified Nov 11, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

s390/syscalls: Add spectre boundary for syscall dispatch table

The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected software

VendorProductVersions
LinuxLinux>= 56e62a73702836017564eaacd5212e4d0fa1c01d, < 3c3b97064764899c39a0abbd35a6caa031e70333; >= 56e62a73702836017564eaacd5212e4d0fa1c01d, < 1cb9c7bc9025c637564fabc7fcc3c9343949e310; >= 56e62a73702836017564eaacd5212e4d0fa1c01d, < 7a5260fbc6e79a1595328ec5c6aa3f937504a1f0; >= 56e62a73702836017564eaacd5212e4d0fa1c01d, < f8c444b918d639e1f9a621ee20fe481c1d10dfc4; >= 56e62a73702836017564eaacd5212e4d0fa1c01d, < 87776f02449e3bded95b2ccbd6b012e9ae64e6f3; >= 56e62a73702836017564eaacd5212e4d0fa1c01d, < 4d05dd18d867d58c6952a3bc260d244899da7256; >= 56e62a73702836017564eaacd5212e4d0fa1c01d, < 48b8814e25d073dd84daf990a879a820bad2bcbd
LinuxLinux5.12

References

Timeline

Published
Apr 22, 2026
Last modified
Nov 11, 2026
NVD status
Analyzed

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CVE-2026-31483: Medium severity, CVSS 5.5 | Vulnix