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Fedora Update Notification
FEDORA-2021-8832eab899
2021-05-20 01:26:49.877973
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Name        : kernel
Product     : Fedora 32
Version     : 5.11.21
Release     : 100.fc32
URL         : https://www.kernel.org/
Summary     : The Linux kernel
Description :
The kernel meta package

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Update Information:

The 5.11.21 stable kernel update contains a number of important fixes across
 the
tree.
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ChangeLog:

* Fri May 14 2021 Justin M. Forbes <jforbes@fedoraproject.org>
 [5.11.21-0]
- can: isotp: prevent race between isotp_bind() and isotp_setsockopt() (Norbert
 Slusarek)
* Wed May 12 2021 Justin M. Forbes <jforbes@fedoraproject.org>
 [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)
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References:

  [ 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
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-8832eab899' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

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/keys
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