Fedora 32: FEDORA-2021-8832eab899 Critical Privilege Escalation

The kernel meta package

The 5.11.21 stable kernel update contains a number of important fixes across the

tree.

* Fri May 14 2021 Justin M. Forbes [5.11.21-0]

- can: isotp: prevent race between isotp_bind() and isotp_setsockopt() (Norbert Slusarek)

* Wed May 12 2021 Justin M. Forbes [5.11.20-0]

- io_uring: truncate lengths larger than MAX_RW_COUNT on provide buffers (Thadeu Lima de Souza Cascardo)

- bpf: Prevent writable memory-mapping of read-only ringbuf pages (Andrii Nakryiko)

- bpf, ringbuf: Deny reserve of buffers larger than ringbuf (Thadeu Lima de Souza Cascardo)

- bpf: Fix alu32 const subreg bound tracking on bitwise operations (Daniel Borkmann)

- net/nfc: fix use-after-free llcp_sock_bind/connect (Or Cohen)

[ 1 ] Bug #1959673 - CVE-2021-32606 kernel: isotp_setsockopt in net/can/isotp.c allows privilege escalation via use-after-free

https://bugzilla.redhat.com/show_bug.cgi?id=1959673

su -c 'dnf upgrade --advisory FEDORA-2021-8832eab899' 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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