CVE-2026-53110
In the Linux kernel, the following vulnerability has been resolved: s390/bpf: Zero-extend bpf prog return values and kfunc arguments s390x ABI requires callers to zero-extend unsigned arguments and sign-extend signed arguments, and callees to zero-extend unsigned return values and sign-extend signed return values. s390 BPF JIT currently implements only sign extension. Fix this omission and implement zero extension too.
- Published Jun 24, 2026
- CVSS 7.8 high
- 0.1% chance of exploitation in the next 30 days (EPSS)
- A fix is available