A nss security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: nss-3.55.0-1.fc31

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Fedora Update Notification
FEDORA-2020-426fd04fd0
2020-08-25 01:16:48.178278
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Name : nss
Product : Fedora 31
Version : 3.55.0
Release : 1.fc31
URL :   http://www.mozilla.org/projects/security/pki/nss/
Summary : Network Security Services
Description :
Network Security Services (NSS) is a set of libraries designed to
support cross-platform development of security-enabled client and
server applications. Applications built with NSS can support SSL v2
and v3, TLS, PKCS #5, PKCS #7, PKCS #11, PKCS #12, S/MIME, X.509
v3 certificates, and other security standards.

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Update Information:

Updates the nss package to upstream NSS 3.55. For details about new
functionality and a list of bugs fixed in this release please see the upstream
release notes -   https://developer.mozilla.org/en-
US/docs/Mozilla/Projects/NSS/NSS_3.55_release_notes
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ChangeLog:

* Sun Aug 2 2020 Daiki Ueno - 3.55.0-1
- Update to NSS 3.55
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References:

[ 1 ] Bug #1851294 - CVE-2020-12401 nss: ECDSA timing attack mitigation bypass
  https://bugzilla.redhat.com/show_bug.cgi?id=1851294
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-426fd04fd0' 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