SECURITY UPDATE: use-after-free in ImagesToBlob() when writing a
multi-image list to an in-memory blob
debian/patches/CVE-2026-93586.patch: add SyncBlobStream() and call it
after WriteImage()/WriteImages() so the owner image and image info
track the live blob buffer, in magick/blob.c, magick/blob-private.h
and magick/constitute.c
CVE-2026-93586
SECURITY UPDATE: resource policy bypass in the PCD and HALD coders
debian/patches/CVE-2026-93587.patch: check the list-length resource
limit before cloning image_info->scene frames, in coders/pcd.c and
coders/hald.c
CVE-2026-93587
SECURITY UPDATE: NULL pointer dereference in the PNM coder
debian/patches/CVE-2026-93588.patch: check the comment buffer for NULL
before using it, in PNMComment() and ReadPNMImage() in coders/pnm.c