A memory leak was discovered in matio 1.5.21 and earlier in Mat_VarReadNextInfo5() in mat5.c via a crafted file. This issue can potentially result in DoS.

Integer overflow vulnerability in Mat_VarReadNextInfo5 in mat5.c in tbeu matio (aka MAT File I/O Library) 1.5.17, allows attackers to cause a Denial of Service or possibly other unspecified impacts.

matio (aka MAT File I/O Library) 1.5.20 and 1.5.21 has a heap-based buffer overflow in H5MM_memcpy (called from H5MM_malloc and H5C_load_entry), related to use of HDF5 1.12.0.

matio (aka MAT File I/O Library) 1.5.18 through 1.5.21 has a heap-based buffer overflow in ReadInt32DataDouble (called from ReadInt32Data and Mat_VarRead4).

A memory leak was discovered in Mat_VarCalloc in mat.c in matio 1.5.17 because SafeMulDims does not consider the rank==0 case.

A stack-based buffer over-read was discovered in Mat_VarReadNextInfo5 in mat5.c in matio 1.5.17.

A stack-based buffer over-read was discovered in ReadNextCell in mat5.c in matio 1.5.17.

A stack-based buffer over-read was discovered in ReadNextStructField in mat5.c in matio 1.5.17.

Multiple integer overflows exist in MATIO before 1.5.16, related to mat.c, mat4.c, mat5.c, mat73.c, and matvar_struct.c

Mat_VarReadNextInfo4 in mat4.c in MATIO 1.5.17 omits a certain '\0' character, leading to a heap-based buffer over-read in strdup_vprintf when uninitialized memory is accessed.