Out-of-bounds Read Affecting php-snmp package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.15% (4th percentile)

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  • Snyk IDSNYK-RHEL7-PHPSNMP-20171253
  • published27 Sept 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-91767  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 php-snmp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-snmp package and not the php-snmp package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

php_openssl_matches_wildcard_name() in ext/openssl/xp_ssl.c underflows the length argument passed to memchr() when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP client read up to SIZE_MAX bytes past the end of a heap allocation. The path is reachable from any default client stream, because verify_peer_name is enabled by default.

CVSS Base Scores

version 3.1