PT-2026-34388 · Linux+2 · Linux Kernel+2
CVE-2026-31483
·
Published
2026-03-27
·
Updated
2026-08-30
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
In the s390 architecture, the syscall number is directly controlled by userspace. The absence of an
array index nospec() boundary allows for potential access beyond the syscall function pointer tables, which could lead to a Spectre-style speculative execution attack.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
RCE
Out of bounds Read
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Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu