EUVD-2026-30541
GHSA-6275-mpwc-pq3g
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
4DescriptionNVD
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.
AnalysisAI
Heap buffer overflow in Imager for Perl versions through 1.030 allows remote attackers to corrupt memory and potentially read limited data via specially crafted multi-frame GIF files. The vulnerability stems from missing bounds validation in the skip-image code path of i_readgif_multi_low(), which reuses a fixed-size buffer allocated for the GIF's global screen width without checking if subsequent image frames exceed these dimensions. …
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