A glibc security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: glibc-2.30-13.fc31

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Fedora Update Notification
FEDORA-2020-4e92a61688
2020-08-02 01:09:07.546626
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Name : glibc
Product : Fedora 31
Version : 2.30
Release : 13.fc31
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.

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Update Information:

This update incorporates fixes from the upstream glibc 2.30 stable release
branch, including a fix for a medium severity security vulnerability.
(CVE-2020-6096)
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ChangeLog:

* Thu Jul 16 2020 Patsy Griffin - 2.30-13
- Upload new source file for previous sync.
* Thu Jul 16 2020 Patsy Griffin - 2.30-12
- Auto-sync with upstream branch release/2.30/master,
commit d59630f9959b0bb8991964758ab854ff4378b20d.
- arm: CVE-2020-6096: Fix multiarch memcpy for negative length [BZ #25620]
- arm: CVE-2020-6096: fix memcpy and memmove for negative length [BZ #25620]
- NEWS: Mention BZ 25933 fix
- Fix avx2 strncmp offset compare condition check [BZ #25933]
- nss_compat: internal_end*ent may clobber errno, hiding ERANGE [BZ #25976]
- NEWS: Merge two bug lists in the glibc 2.30.1 section
- NEWS: Mention fixes for BZ 25810/25896/25902/25966
- x86-64: Use RDX_LP on __x86_shared_non_temporal_threshold [BZ #25966]
- Add a C wrapper for prctl [BZ #25896]
- powerpc: Rename argN to _argN in LOADARGS_N [BZ #25902]
- Add C wrappers for process_vm_readv/process_vm_writev [BZ #25810]
- Mark unsigned long arguments with U in more syscalls [BZ #25810]
- Add a syscall test for [BZ #25810]
- Add SYSCALL_ULONG_ARG_[12] to pass long to syscall [BZ #25810]
- x32: Properly pass long to syscall [BZ #25810]
- Add new file missed in previous hppa commit.
- Fix data race in setting function descriptors during lazy binding on hppa.
- stdlib: Move tst-system to tests-container
- support/shell-container.c: Add builtin kill
- support/shell-container.c: Add builtin exit
- support/shell-container.c: Return 127 if execve fails
- Add NEWS entry for CVE-2020-1751 (bug 25423)
- posix: Fix system error return value [BZ #25715]
- sparc: Move sigreturn stub to assembly
- arm: Fix softp-fp Implies (BZ #25635)
- i386: Use comdat instead of .gnu.linkonce for i386 setup pic register (BZ #20543)
- Add NEWS entry for CVE-2020-1752 (bug 25414)
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References:

[ 1 ] Bug #1820332 - CVE-2020-6096 glibc: signed comparison vulnerability in the ARMv7 memcpy function [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1820332
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-4e92a61688' 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