Fedora 34: 2021-286375de1e Moderate: Kernel 5.11.20 Security Issue

Kernel-headers includes the C header files that specify the interface

between the Linux kernel and userspace libraries and programs. The

header files define structures and constants that are needed for

building most standard programs and are also needed for rebuilding the

glibc package.

The 5.11.20 stable kernel update contains a number of important fixes across the

tree.

* Wed May 12 2021 Justin M. Forbes - 5.11.20-300

- Linux v5.11.20

[ 1 ] Bug #1959514 - CVE-2021-23134 kernel: use-after-free in nfc sockets

https://bugzilla.redhat.com/show_bug.cgi?id=1959514

[ 2 ] Bug #1959556 - CVE-2021-3490 kernel: Linux kernel eBPF bitwise ops ALU32 bounds tracking

https://bugzilla.redhat.com/show_bug.cgi?id=1959556

[ 3 ] Bug #1959559 - CVE-2021-3489 kernel: Linux kernel eBPF RINGBUF map oversized allocation

https://bugzilla.redhat.com/show_bug.cgi?id=1959559

[ 4 ] Bug #1959565 - CVE-2021-3491 kernel: Linux kernel io_uring PROVIDE_BUFFERS MAX_RW_COUNT bypass

https://bugzilla.redhat.com/show_bug.cgi?id=1959565

su -c 'dnf upgrade --advisory FEDORA-2021-286375de1e' 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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