Out-of-bounds Read Affecting php8.3-ffi-debuginfo package, versions <0:8.3.35-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.36% (27th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-PHP83FFIDEBUGINFO-20849451
  • published13 Oct 2026
  • disclosed25 Sept 2026

Introduced: 25 Sep 2026

NewCVE-2026-92842  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 php8.3-ffi-debuginfo to version 0:8.3.35-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3162.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php8.3-ffi-debuginfo package and not the php8.3-ffi-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 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