Buffer Over-read Affecting glib2 package, versions <0:2.82.2-770.amzn2023


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.36% (30th percentile)

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  • Snyk IDSNYK-AMZN2023-GLIB2-18064539
  • published21 Jul 2026
  • disclosed30 Jun 2026

Introduced: 30 Jun 2026

CVE-2026-58012  (opens in a new tab)
CWE-126  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 glib2 to version 0:2.82.2-770.amzn2023 or higher.
This issue was patched in ALAS2023-2026-1942.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glib2 package and not the glib2 package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1