Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.12.1, < 5.15.203 |
References
- https://git.kernel.org/stable/c/1cb9c7bc9025c637564fabc7fcc3c9343949e310Patch
- https://git.kernel.org/stable/c/3c3b97064764899c39a0abbd35a6caa031e70333Patch
- https://git.kernel.org/stable/c/48b8814e25d073dd84daf990a879a820bad2bcbdPatch
- https://git.kernel.org/stable/c/4d05dd18d867d58c6952a3bc260d244899da7256Patch
- https://git.kernel.org/stable/c/7a5260fbc6e79a1595328ec5c6aa3f937504a1f0Patch
- https://git.kernel.org/stable/c/87776f02449e3bded95b2ccbd6b012e9ae64e6f3Patch
- https://git.kernel.org/stable/c/f8c444b918d639e1f9a621ee20fe481c1d10dfc4Patch
FAQ
What is CVE-2026-31483?
CVE-2026-31483 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 do...
How severe is CVE-2026-31483?
CVE-2026-31483 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31483?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.