CVE-2026-92842 Affecting php-pecl-xdebug-debugsource package, versions <0:2.9.5-1.module+el8.10.0+1604+6558efc7


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.36% (27th percentile)

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  • Snyk IDSNYK-ROCKY8-PHPPECLXDEBUGDEBUGSOURCE-21443193
  • published23 Oct 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-92842  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 php-pecl-xdebug-debugsource to version 0:2.9.5-1.module+el8.10.0+1604+6558efc7 or higher.
This issue was patched in RLSA-2026:87080.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-pecl-xdebug-debugsource package and not the php-pecl-xdebug-debugsource package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

The convert.base64-encode, convert.quoted-printable-encode and convert.quoted-printable-decode stream filters accept a line-break-chars option whose length is tracked separately from the string itself. The filter constructors duplicate the value with pestrdup(), which stops at the first NUL byte, while keeping the original length. When the filter later emits a line break it copies the recorded length out of the truncated allocation, reading past its end and placing adjacent heap bytes into the filter output.

CVSS Base Scores

version 3.1