PT-2026-53871 · Red Hat · Red Hat Enterprise Linux 10+5

Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-58012

NVD

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

A flaw was found in GLib. A buffer over-read can occur in the g regex replace function when used with the G REGEX RAW compile flag and case-change replacement escapes because the string append function processes matched substrings using UTF-8 functions that assume valid UTF-8 input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.

Fix

Buffer Over-read

Weakness Enumeration

CWE-126

Related Identifiers

CVE-2026-58012

Affected Products

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 6

Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

Red Hat Hardened Images

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-58012 · Security Note
• https://gitlab.gnome.org/GNOME/glib/-/issues/3918 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2492247 · Note
• https://access.redhat.com/security/cve/CVE-2026-58012 · Note