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Crash: Floating-point to integer conversion overflow in ass_render_event() on extreme override-tag values (CWE-681) -> UBSAN SIGILL

bug

Status: Open.

#948In libass/libass;

· 1820893135-pixel opened on Aug 16, 2026

Crash: Signed integer subtraction overflow in ass_outline_construct (and float-to-int overflow in ass_render_event) on extreme numeric subtitle input -> UBSAN SIGILL

bug

Status: Open.

#947In libass/libass;

· 1820893135-pixel opened on Aug 16, 2026

Unbounded memory use when tokenizing ASS drawing commands

Status: Open.

#945In libass/libass;

· acts-1631 opened on Jul 21, 2026

Rendering: Mispositioned combining marks when base and mark glyphs use different fonts

compatibility

shaper

Status: Open.

#932In libass/libass;

· moi15moi opened on Jun 6, 2026

Crash: UBSan: signed integer overflow in ass_render.c when processing \p vector drawing commands

bug

Status: Open.

#931In libass/libass;

· wolfvoid opened on Jun 1, 2026

Libass loads WOFF/WOFF2 script-embedded fonts, while VSFilter doesn't

compatibility

Status: Open.

#923In libass/libass;

· Jukizuka opened on May 2, 2026

Font gets reduced character spacing with GDI/VSFilter faux bold

compatibility

fonts

Status: Open.

#905In libass/libass;

· astiob opened on Oct 24, 2025

Rendering: Incompatibility with non-ASCII numerals in tag parameters (e.g., Burmese, Arabic, Fullwidth digits)

compatibility

parser

Status: Open.

#893In libass/libass;

· amanosatosi opened on Jul 6, 2025

Adding animated transform to \pos

question

Status: Open.

#886In libass/libass;

· jeybee opened on Jun 9, 2025

Rendering: Aliased Shape Rendering

compatibility

Status: Open.

#881In libass/libass;

· witchymary opened on May 9, 2025

Merely splitting up a long moving line of text speeds up rendering

performance

Status: Open.

#844In libass/libass;

· astiob opened on Oct 28, 2024

[RFC/Discussion] Text to shape / Text metrics API

api

Status: Open.

#825In libass/libass;

· arch1t3cht opened on Sep 12, 2024