Bug 2544621 (CVE-2026-102505)

Summary: CVE-2026-102505 perl-Imager: perl-Imager: Arbitrary code execution via heap-based buffer overflow in paletted image processing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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A flaw was found in perl-Imager. When processing floating-point samples from a paletted image, the application allocates an undersized buffer for multi-channel requests. An attacker could provide a specially crafted image to trigger a heap-based buffer overflow with controlled data, potentially leading to arbitrary code execution or a Denial of Service (DoS).
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Bug Depends On: 2544669    
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Description OSIDB Bzimport 2026-10-01 13:34:48 UTC 
Imager versions before 1.037 for Perl overflow a heap buffer fetching float samples from a paletted image in i_gsampf_fp.

For a paletted image, getsamples() with type "float" allocates a buffer of one sample per pixel and fetches every requested channel of each pixel into it. Requesting more than one channel writes past its end.

An attacker-supplied image controls the overflowing bytes through its palette.