[Bug 723830] Re: seamonkey-2.0-bin assert failure: *** buffer overflow detected ***: /usr/lib/seamonkey-2.0.11/seamonkey-2.0-bin terminated

[Anders Kaseorg]

I think this is fixed upstream by
http://hg.mozilla.org/releases/mozilla-2.0/rev/c5b3d7beca8c#l17.29 .
The problem was that struct hentry ended with a single char that was
used as a variable-length array, and writing multiple chars into the
space allocated for a single char triggered fortify checks (even though
there was enough space after the end of the struct).  Now it ends with a
char[1], which fortify recognizes as represending a flexible array.

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Title:
  seamonkey-2.0-bin assert failure: *** buffer overflow detected ***:
  /usr/lib/seamonkey-2.0.11/seamonkey-2.0-bin terminated

Status in “seamonkey” package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: seamonkey

  Seamonkey has consistently crashed since I started using the Alpha
  builds in the 11.04 series.  Previous versions of Seamonkey with
  Kubuntu or Xubuntu were quite reliable; since Alpha testing, even
  accessing a few Web pages has been difficult.  Looks like a buffer
  overflow is the culprit.  Until the debugger came up, I had no
  diagnostic information to provide; otherwise I would have sent it in
  much sooner.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.04
  Package: seamonkey-browser 2.0.11+build1+nobinonly-0ubuntu2
  ProcVersionSignature: Ubuntu 2.6.38-4.31-generic 2.6.38-rc5
  Uname: Linux 2.6.38-4-generic i686
  NonfreeKernelModules: wl
  Architecture: i386
  AssertionMessage: *** buffer overflow detected ***: /usr/lib/seamonkey-2.0.11/seamonkey-2.0-bin terminated
  Date: Wed Feb 23 12:16:55 2011
  ExecutablePath: /usr/lib/seamonkey-2.0.11/seamonkey-2.0-bin
  InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110202)
  ProcCmdline: /usr/lib/seamonkey-2.0.11/seamonkey-2.0-bin
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Signal: 6
  SourcePackage: seamonkey
  StacktraceTop:
   __kernel_vsyscall ()
   raise () from /lib/libc.so.6
   abort () from /lib/libc.so.6
   ?? () from /lib/libc.so.6
   __fortify_fail () from /lib/libc.so.6
  Title: seamonkey-2.0-bin assert failure: *** buffer overflow detected ***: /usr/lib/seamonkey-2.0.11/seamonkey-2.0-bin terminated
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare