A mingw-openjpeg2 security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: mingw-openjpeg2-2.4.0-3.fc34

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Fedora Update Notification
FEDORA-2021-c1ac2ee5ee
2021-06-12 01:16:57.188722
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Name : mingw-openjpeg2
Product : Fedora 34
Version : 2.4.0
Release : 3.fc34
URL :   https://github.com/uclouvain/openjpeg
Summary : MinGW Windows openjpeg2 library
Description :
MinGW Windows openjpeg2 library.

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Update Information:

Add proposed patches for CVE-2021-29338 and a heap buffer overflow.
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ChangeLog:

* Thu May 27 2021 Sandro Mani - 2.4.0-3
- Apply proposed patches for CVE-2021-29338 and a heap buffer overflow (#1957616)
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References:

[ 1 ] Bug #1950103 - CVE-2021-29338 mingw-openjpeg2: openjpeg2: out-of-bounds write due to an integer overflow in opj_compress.c [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1950103
[ 2 ] Bug #1950105 - CVE-2021-29338 openjpeg2: out-of-bounds write due to an integer overflow in opj_compress.c [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1950105
[ 3 ] Bug #1957618 - CVE-2021-3575 openjpeg2: openjpeg: heap-buffer-overflow in color.c may lead to DoS or arbitrary code execution [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1957618
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-c1ac2ee5ee' 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