Out-of-bounds Read Affecting php8.4-pgsql-debuginfo package, versions <0:8.4.21-1.el10_2


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-RHEL10-PHP84PGSQLDEBUGINFO-17135066
  • published3 Jun 2026
  • disclosed10 May 2026

Introduced: 10 May 2026

NewCVE-2026-6104  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:10 php8.4-pgsql-debuginfo to version 0:8.4.21-1.el10_2 or higher.
This issue was patched in RHSA-2026:22649.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php8.4-pgsql-debuginfo package and not the php8.4-pgsql-debuginfo package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

In PHP versions 8.4.* before 8.4.21 and 8.5.* before 8.5.6, when an encoding name containing an embedded NUL byte is passed to mb_convert_encoding() or related mbstring functions, the code incorrectly assumes that when strncasecmp() returns 0 it means the strings have the same length. This can lead to out-of-bounds read of global memory, potentially causing a crash or information disclosure or crash. Affected functions include mb_convert_encoding(), mb_detect_encoding(), mb_convert_variables(), and mb_detect_order(), as well as the mbstring.detect_order and mbstring.http_output INI settings.

CVSS Base Scores

version 3.1