Medium · published August 2, 2021
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≤ 5.13.7 | — |
| fedoraproject/fedora | all versions | — |
| fedoraproject/fedora | all versions | — |
| debian/debian_linux | all versions | — |