RHSA-2020:4539 — Security Advisory
Red Hat Security Advisory: pcre2 security and enhancement update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · November 4, 2020
Updated · August 5, 2026
Topic
An update for pcre2 is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
The pcre2 package contains a new generation of the Perl Compatible Regular Expression libraries for implementing regular expression pattern matching using the same syntax and semantics as Perl.
Security Fix(es):
- pcre: Out of bounds read in JIT mode when \X is used in non-UTF mode (CVE-2019-20454)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section.