Incorrect Calculation of Buffer Size Affecting glibc package, versions <0:2.28-189.13.el8_6


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.5% (40th percentile)

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  • Snyk IDSNYK-RHEL8-GLIBC-17724486
  • published30 Jun 2026
  • disclosed20 Apr 2026

Introduced: 20 Apr 2026

CVE-2026-5450  (opens in a new tab)
CWE-131  (opens in a new tab)

How to fix?

Upgrade RHEL:8 glibc to version 0:2.28-189.13.el8_6 or higher.
This issue was patched in RHSA-2026:33227.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in a one byte heap buffer overflow.

CVSS Base Scores

version 3.1