PackLinuxElf64::unpack in p_lx_elf.cpp in UPX 3.95 allows remote attackers to cause a denial of service , limit the ability of a malware scanner to operate on the entire original data, or possibly have unspecified other impact via a crafted file.canUnpack in p_vmlinx.cpp in UPX 3.95 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted UPX packed file.A heap-based buffer over-read was discovered in canUnpack in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.An invalid memory address dereference was discovered in the canUnpack function in p_mach.cpp in UPX 3.95 via a crafted Mach-O file.