RHSA-2026:76777 — Security Advisory
Red Hat Security Advisory: glibc security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · October 7, 2026
Updated · November 2, 2026
Topic
An update for glibc 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 glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd) used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.
Security Fix(es):
-
glibc: Process abort due to invalid memory in wordexp (CVE-2026-6368)
-
glibc: Denial of Service via stack exhaustion during tilde expansion (CVE-2026-6791)
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.