CVE-2026-13705

Name	CVE-2026-13705
Description	Imager versions before 1.032 for Perl have a heap out-of-bounds read in the bundled Imager::File::SGI reader via a 16-bit RLE literal run in read_rgb_16_rle. read_rgb_16_rle guards each literal run with if (count > data_left), but count is a pixel count while every 16-bit sample consumes two bytes. The copy loop reads inp[0] * 256 + inp[1] and advances two bytes per pixel, so a run with data_left / 2 < count <= data_left passes the guard yet consumes 2 * count bytes and reads past the end of the buffer. The 8-bit path is unaffected because there one pixel is one byte. Reading a crafted SGI image through Imager->read triggers the over-read before the parser rejects the malformed image, which can crash the process.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1141587

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libimager-perl (PTS)	bullseye	1.012+dfsg-1	vulnerable
	bookworm	1.019+dfsg-1	vulnerable
	trixie	1.027+dfsg-1	vulnerable
	forky, sid	1.033+dfsg-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libimager-perl	source	(unstable)	1.032+dfsg-1			1141587

Notes

[trixie] - libimager-perl <no-dsa> (Minor issue)
https://lists.security.metacpan.org/cve-announce/msg/41572386/
Fixed by: https://github.com/tonycoz/imager/commit/f28de02770dfc26ffbdc32048970ed84babbf730 (v1.032)