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33-Year-Old Unix Bug Fixed In OpenBSD

Posted by kdawson on from the yet-another-stack-overflow dept.

Ste sends along the cheery little story of Otto Moerbeek, one of the OpenBSD developers, who recently found and fixed a 33-year-old buffer overflow bug in Yacc. "But if the stack is at maximum size, this will overflow if an entry on the stack is larger than the 16 bytes leeway my malloc allows. In the case of of C++ it is 24 bytes, so a SEGV occurred. Funny thing is that I traced this back to Sixth Edition UNIX, released in 1975."

2 of 162 comments (clear)

  1. No, damn by Nimey · · Score: 0, Redundant

    Damn. Ignore that, it's a different ancient Unix bug.

    --
    Hail Eris, full of mischief...

    E pluribus sanguinem
  2. Re:And Next Week by Pazy · · Score: 0, Redundant

    Sorry that message was me, didnt seem to want to keep me signed in :|