MGASA-2021-0398

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MGASA-2021-0398

Summary: Updated kernel-linus packages fix security vulnerabilities

Details: This kernel-linus update is based on upstream 5.10.56 and fixes at least 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.

References: https://advisories.mageia.org/MGASA-2021-0398.html, https://bugs.mageia.org/show_bug.cgi?id=29313, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.53, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.54, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.55, https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.56