Fedora 34: 5.13.8 Kernel Update Security Advisory - Critical BPF Issues

The kernel meta package

The 5.13.8 stable kernel update contains a number of important fixes across the

tree.

* Wed Aug 4 2021 Justin M. Forbes [5.13.8-200]

- Re-enable sermouse for x86 (rhbz 1974002) (Justin M. Forbes)

- Revert CRYPTO_ECDH and CRYPTO_ECDA from builtin to module to fix fips (Justin M. Forbes)

- drm/rockchip: remove existing generic drivers to take over the device (Javier Martinez Canillas)

- powerpc/pseries: Fix regression while building external modules (Srikar Dronamraju)

[ 1 ] Bug #1989212 - CVE-2021-34556 kernel: unprivileged BPF program can obtain sensitive information from kernel memory via a speculative store bypass side-channel attack because of the possibility of uninitialized memory locations on the BPF stack

https://bugzilla.redhat.com/show_bug.cgi?id=1989212

[ 2 ] Bug #1989216 - CVE-2021-35477 kernel: unprivileged BPF program can obtain sensitive information from kernel memory via a speculative store bypass side-channel attack because the technique used by the BPF verifier to manage speculation is unreliable

https://bugzilla.redhat.com/show_bug.cgi?id=1989216

su -c 'dnf upgrade --advisory FEDORA-2021-4d4d3866ca' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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