Important: xorg-x11-server security, bug fix, and enhancement update

X.Org is an open-source implementation of the X Window System. It provides the basic low-level functionality that full-fledged graphical user interfaces are designed upon. Security Fixes: xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: stack buffer overflow in font alias resolution du...

PT-2026-53074

This update for xwayland fixes the following issues: - CreateSaverWindow Use-After-Free Information Disclosure. bsc1266301 - Font Alias Stack-based Buffer Overflow. bsc1266294 - GLX ChangeDrawableAttributes Out-Of-Bounds Read/Write. bsc1266300 - XKB Key Types Stack-based Buffer Overflow. bsc12662...

pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. Patches This has been fixed in pypdf==6.13.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 3830...

GHSA-52X6-GQ3R-VPF4 pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. Patches This has been fixed in pypdf==6.13.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 3830...

FreeType Glyph Loader for Font Parsing Validation

This Python script uses the FreeType bindings to load and inspect a specified TrueType font file and test glyph parsing behavior for a chosen glyph index. It initializes a font face, displays basic metadata such as the font family name and glyph count, then attempts to load a target glyph using...

FreeType SHZ Heap Buffer Overflow Verification Tool

This C proof of concept is designed to validate the presence of a potential heap buffer overflow in the TrueType bytecode interpreter of the FreeType library. The program initializes FreeType, loads a user-supplied modified TrueType font file, explicitly enables the interpreter mode, and attempts...

FreeType Glyph Parallel Range Scanner for Font Parsing Stability Testing

This Python tool performs automated glyph parsing validation across a configurable range of glyph indices within a font file using FreeType bindings. It loads the target font, extracts metadata such as family name, style, and glyph count, then iteratively tests glyph loading operations using...

FreeType SHZ 2.14.3 Font Parsing Analyzer for Glyph Stability Assessment

This Python script performs basic robustness testing of font parsing behavior using the FreeType bindings by loading a target font and iterating through a large set of glyph indices. For each glyph, it attempts non-scaled and non-hinted glyph loading while collecting exceptions that may indicate...

📄 FreeType Font Rendering Overflow Test Harness / Crash Detection

This C program is a testing harness built around the FreeType font rendering library to detect potential memory corruption issues such as heap buffer overflows when loading malicious or malformed TrueType font files...

📄 FreeType SHZ 2.14.3 Heap Buffer Overflow

This Python proof of concept framework is designed for security research into a reported heap buffer overflow condition affecting the FreeType TrueType bytecode interpreter. The code constructs specially crafted font structures intended to exercise the SHZ instruction path, generates malformed...

OESA-2026-2681 xorg-x11-server security update

X.Org X11 X server Security Fixes: 'Hi all,\n\nCVEs have been issued now, please see inline below\n\nOn Tue, Jun 02, 2026 at 10:01:46AM +1000, Peter Hutterer wrote:', "=======================================================================\nX.Org Security Advisory: June 2, 2026 \n\nIssues in X.Or...

FreeType Automated Font Corpus Scanner

This Python framework implements a structured font-analysis pipeline for large-scale robustness testing of FreeType font parsing behavior...

FreeType Experimental TrueType Glyph Construction

This Python code outlines an experimental framework for constructing synthetic TrueType font structures intended for studying parser behavior, glyph-processing logic, and edge-case handling within font-rendering pipelines...

Malicious code in tailwind-typography-plus (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 29345b97ddc8c5fe985d1a69d53db15e4126052929267a584b463e94f43b0bc3 [email protected] impersonates the legitimate @tailwindcss/typography Tailwind CSS plugin confusable name, copied plugin export shape,...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Pillow vulnerabilities (USN-8399-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8399-1 advisory. It was discovered that Pillow incorrectly handled large glyph advance values in fonts. An attacker could possibly use thi...

Font Generator for Embedded Bitmap and Color Glyph Pipeline Robustness Testing

This Python program constructs a handcrafted TrueType font file that combines multiple font subsystems - including embedded bitmap tables, color glyph definitions, glyph mapping structures, and minimal layout metadata - into a single synthetic test artifact...

Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch

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Adobe Acrobat Reader DC Font Handling Use-After-Free Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handli...

CVE-2026-41159

A flaw was found in Mermaid, a JavaScript tool for creating diagrams and charts. A remote attacker could exploit this vulnerability by injecting malicious Cascading Style Sheets CSS through specific configuration options, such as fontFamily, themeCSS, and altFontFamily. This injected CSS can bypa...

USN-8399-1: Pillow vulnerabilities

It was discovered that Pillow incorrectly handled large glyph advance values in fonts. An attacker could possibly use this issue to cause Pillow to crash, resulting in a denial of service. CVE-2026-42308 It was discovered that Pillow incorrectly handled nested coordinate lists in certain APIs. An...