Gentoo Linux Security Advisory 201702-6 - Multiple vulnerabilities have been found in Graphviz and the extent of these vulnerabilities are unspecified. Versions less than 2.36.0 are affected.
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Ubuntu Security Notice 2083-1 - It was discovered that Graphviz incorrectly handled memory in the yyerror function. If a user were tricked into opening a specially crafted dot file, an attacker could cause Graphviz to crash, or possibly execute arbitrary code. It was discovered that Graphviz incorrectly handled memory in the chkNum function. If a user were tricked into opening a specially crafted dot file, an attacker could cause Graphviz to crash, or possibly execute arbitrary code. Various other issues were also addressed.
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