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CVE PROGRAM SOURCE RECORD6.1 Medium

CVE-2026-42144

CImg Library: Integer overflow in PNM size check bypasses memory guard (_load_pnm)

Description

CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM file with large dimension values causes the overflow to wrap around, allocating an undersized buffer and potentially triggering a heap buffer overflow. Any application using CImg to load untrusted image files is affected. This issue has been patched via commit 4ca26bc.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

GreycLab CImg

  • < 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27daffected

References