OSV-2023-1071 Heap-use-after-free in igraph_pajek_yyparse

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63609 Crash type: Heap-use-after-free READ 11 Crash state: igraphpajekyyparse igraphreadgraphpajek readpajek.cpp...

OSV-2023-1070 Segv on unknown address in igraph_strvector_set_len

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63599 Crash type: Segv on unknown address Crash state: igraphstrvectorsetlen igraphipajekaddstringattribute igraphpajekyyparse...

OSV-2023-1069 Heap-use-after-free in igraph_pajek_yyparse

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63590 Crash type: Heap-use-after-free READ 3 Crash state: igraphpajekyyparse igraphreadgraphpajek readpajek.cpp...