libvips matrixload.c vips_foreign_load_matrix_header memory corruption

A flaw has been found in libvips up to 8.18.0. The affected element is the function vips_foreign_load_matrix_file_is_a/vips_foreign_load_matrix_header of the file libvips/foreign/matrixload.c. Executing a manipulation can lead to memory corruption. The attack needs to be launched locally. This patch is called d4ce337c76bff1b278d7085c3c4f4725e3aa6ece. A patch should be applied to remediate this issue.