CVE-2026-31483
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.
- Published Apr 22, 2026
- CVSS 5.5 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available