High · published June 24, 2026
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 6.3, < 6.6.141 | 6.6.141 |
| linux/linux_kernel | ≥ 6.7, < 6.12.91 | 6.12.91 |
| linux/linux_kernel | ≥ 6.13, < 6.18.33 | 6.18.33 |
| linux/linux_kernel | ≥ 6.19, < 7.0.10 | 7.0.10 |