Use After Free Affecting texlive-bin package, versions *


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-DEBIAN12-TEXLIVEBIN-18137963
  • published22 Jul 2026
  • disclosed21 Jul 2026

Introduced: 21 Jul 2026

CVE-2026-63729  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 texlive-bin.

NVD Description

Note: Versions mentioned in the description apply only to the upstream texlive-bin package and not the texlive-bin package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

The SyncTeX parser (synctex_parser.c) shipped with TeX Live and embedded by downstream consumers such as GNOME Evince contains a heap use-after-free vulnerability that allows attackers to crash applications or potentially execute arbitrary code by supplying a malformed .synctex or .synctex.gz file. A malformed SyncTeX file can construct a ref node with a NULL parent pointer, causing the replacement routine to fail to detach the node from its sibling chain, which triggers recursive freeing of live tree nodes and leaves dangling pointers that are later accessed by the parser during document load.

CVSS Base Scores

version 3.1