An issue was discovered in HDF5 through 1.12.0. A NULL pointer dereference exists in the function H5Fgetnrefs() located in H5Fquery.c. It allows an attacker to cause Denial of Service.

An issue was discovered in HDF5 through 1.12.0. A heap-based buffer overflow exists in the function Decompress() located in decompress.c. It can be triggered by sending a crafted file to the gif2h5 binary. It allows an attacker to cause Denial of Service.

An issue was discovered in HDF5 through 1.12.0. A NULL pointer dereference exists in the function H5ACunpinentry() located in H5AC.c. It allows an attacker to cause Denial of Service.

An issue was discovered in HDF5 through 1.12.0. A heap-based buffer over-read exists in the function H5Olayoutdecode() located in H5Olayout.c. It allows an attacker to cause Denial of Service.