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 a certain preempting store operation does not necessarily occur before a store operation that has an attacker-controlled value.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≤ 5.13.7 | — |
| debian/debian_linux | all versions | — |
| fedoraproject/fedora | all versions | — |
| fedoraproject/fedora | all versions | — |