pdfloadobjstm in pdf/pdf-xref.c in Artifex MuPDF 1.12.0 could reference the object stream recursively and therefore run out of error stack, which allows remote attackers to cause a denial of service via a crafted PDF document.

In Artifex MuPDF 1.12.0, the pdfreadnewxref function in pdf/pdf-xref.c allows remote attackers to cause a denial of service (segmentation violation and application crash) via a crafted pdf file.

In Artifex MuPDF 1.12.0, there is a heap-based buffer overflow vulnerability in the dopdfsavedocument function in the pdf/pdf-write.c file. Remote attackers could leverage the vulnerability to cause a denial of service via a crafted pdf file.

In MuPDF 1.12.0, there is an infinite loop vulnerability and application hang in the pdfparsearray function (pdf/pdf-parse.c) because EOF is not considered. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted pdf file.