CVE-2026-31483 Details
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.
A vulnerability has been addressed in the Linux kernel's handling of system calls on the s390 architecture. The issue arises because the syscall number can be manipulated by userspace, leading to potential access beyond the intended boundaries of the syscall function pointer tables. This vulnerability did not include a protective boundary to prevent such oversights, creating a risk of improper access or execution.
Users can update to the latest version of the Linux kernel where this vulnerability has been fixed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310 | kernel.org | Patch |
| https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333 | kernel.org | Patch |
| https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbd | kernel.org | Patch |
| https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0 | kernel.org | Patch |
| https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.12.1, < 5.15.203 >= 5.16, < 6.1.168 >= 6.2, < 6.6.131 >= 6.7, < 6.12.80 >= 6.13, < 6.18.21 >= 6.19, < 6.19.11 5.12 - 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 28, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | New CVE Received | kernel.org |