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Imager-1.039
⭐ Starred 27 / Imager::Filter::Mandelbrot
Security Advisories (1)
CVE-2026-112202 (2026-10-20)

Imager::File::GIF versions before 1.006 for Perl allow out-of-bounds reads when consolidating GIF images. With `gif_consolidate => 1`, palette indices from the image are used without checking the colour table's bounds. The i_readgif_low routine reads beyond the heap allocation and copies the bytes into output pixels. The default GIF reader is not affected. The same code ships bundled in the Imager distribution. An attacker supplying a crafted GIF can disclose adjacent heap memory through the decoded output and may crash the process.

NAME

Imager::Filter::Mandelbrot - filter that renders the Mandelbrot set.

SYNOPSIS

use Imager;
use Imager::Filter::Mandelbrot;

$img->filter(type=>'mandelbrot', ...);

DESCRIPTION

This is a expansion of the mandelbrot dynamically loadable filter provided in dynfilt in previous releases of Imager.

Valid filter parameters are:

  • minx, maxx - the range of x values to render. Defaults: -2.5, 1.5.

  • miny, maxy - the range of y values to render. Defaults: -1.5, 1.5

  • maxiter - the maximum number of iterations to perform when checking if the sequence tend towards infinity.

AUTHOR

Original by Arnar M. Hrafnkelsson.

Adapted and expanded by Tony Cook <tonyc@cpan.org>

SEE ALSO

Imager, Imager::Filters.