This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-92842 →

UBUNTU-CVE-2026-92842

The convert.base64-encode, convert.quoted-printable-encode and convert.quoted-printable-decode stream filters accept a line-break-chars option whose l...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV