/ 
Imager-1.024
⭐ Starred 27 / Imager::Filter::Flines
Security Advisories (2)
CVE-2024-53901 (2024-11-17)

"invalid next size" backtrace on use of trim on certain images

CVE-2026-8669 (2026-05-15)

Imager versions through 1.030 for Perl allow a heap out of bounds (OOB) write on crafted multi-frame GIF files. Imager::File::GIF's i_readgif_multi_low allocates a single per-row buffer GifRow sized for the GIF's global screen width 'SWidth' and reuses it across every image in the file. The page-match branch validates Image.Width + Image.Left > SWidth before each DGifGetLine write, but the parallel skip-image branch at imgif.c:790-805 calls DGifGetLine(GifFile, GifRow, Width) with no such check.

NAME

Imager::Filter::Flines - dim alternate lines to emulate a video display

SYNOPSIS

use Imager;
use Imager::Filter::Flines;

$img->filter(type=>'flines');

DESCRIPTION

This is an adaption of the flines dynamically loadable filter provided in dynfilt/ in previous releases of Imager.

This filter has no parameters.

AUTHOR

Original by Arnar M. Hrafnkelsson.

Adapted by Tony Cook <tonyc@cpan.org>

SEE ALSO

Imager, Imager::Filters.