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Submission + - 23-Year-Old X11 Server Security Vulnerability Exposed (phoronix.com) 1

An anonymous reader writes: The recent report of X11/X.Org security in bad shape rings more truth today. The X.Org Foundation announced today that they've found a X11 security issue that dates back to 1991. The issue is a possible stack buffer overflow that could lead to privilege escalation to root and affects all versions of the X Server back to X11R5. After the vulnerability being in the code-base for 23 years, it was finally uncovered via the automated cppcheck static analysis utility.
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23-Year-Old X11 Server Security Vulnerability Exposed

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Numeric stability is probably not all that important when you're guessing.