Mageia 8: MGASA-2021-0398 Moderate: Kernel-Linus BPF Memory Exposure

This kernel-linus update is based on upstream 5.10.56 and fixes atleast the following security issues:
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 (CVE-2021-34556).
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 (CVE-2021-35477).
For other upstream fixes, see the referenced changelogs.