CVE-2026-106061 Gimp: gimp: heap buffer over-read in x cursor (xmc) thumbnail loader on crafted file

A flaw was found in GIMP’s X cursor XMC thumbnail loader. When GIMP generates a thumbnail for a crafted XMC file, it allocates a pixel buffer using a width height size computed in 32-bit signed arithmetic. If that product overflows, the allocation is smaller than the true image extent. A subseque...