A glibc security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: glibc-2.32-8.fc33

--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2021-f29b4643c7
2021-07-07 01:03:57.431634
--------------------------------------------------------------------------------

Name : glibc
Product : Fedora 33
Version : 2.32
Release : 8.fc33
URL :   http://www.gnu.org/software/glibc/
Summary : The GNU libc libraries
Description :
The glibc package contains standard libraries which are used by
multiple programs on the system. In order to save disk space and
memory, as well as to make upgrading easier, common system code is
kept in one place and shared between programs. This particular package
contains the most important sets of shared libraries: the standard C
library and the standard math library. Without these two libraries, a
Linux system will not function.

--------------------------------------------------------------------------------
Update Information:

This `glibc` update re-enables `valgrind` suppression support for string
functions. It addresses `valgrind` false positives on the aarch64 architecture
in particular. ---- This glibc update fixes a use-after-free in the
`mq_notify` function (CVE-2021-33574).
--------------------------------------------------------------------------------
ChangeLog:

* Mon Jun 21 2021 Florian Weimer - 2.32-8
- Add valgrind support symbols to libc.so.6's symtab (#1965374)
* Fri Jun 11 2021 Arjun Shankar - 2.32-7
- Auto-sync with upstream branch release/2.32/master,
commit 16949aeaa078b5994a333980d7a6cd5705d5e1f7:
- Fix use of __pthread_attr_copy in mq_notify (bug 27896)
- Use __pthread_attr_copy in mq_notify (bug 27896)
--------------------------------------------------------------------------------
References:

[ 1 ] Bug #1965374 - glibc: valgrind suppressions no longer active after debuginfo removal
  https://bugzilla.redhat.com/show_bug.cgi?id=1965374
[ 2 ] Bug #1965410 - CVE-2021-33574 glibc: mq_notify does not handle separately allocated thread attributes [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1965410
--------------------------------------------------------------------------------

This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-f29b4643c7' 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