[DRE-maint] [Bug 736521] [NEW] two segfaults in ruby inotify extension library

[Jeremy Fishman]

Public bug reported:

Binary package hint: libinotify-ruby

Segfault #1 - Poor input type checking in rb_inotify_add_watch() throws a segfault when passed e.g. the nil object
Segfault #2 - Closing the inotify file descriptor in a separate thread may lead to fd reuse and segfault in rb_inotify_each_event

Supplied patch provides tests to trigger these bugs and
a) adds a type check in rb_inotify_add_watch()
b) sets the file descriptor to -1 in rb_inotify_close()
c) exits rb_inotify_each_event() when the file descriptor is invalidated

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libinotify-ruby 0.0.2-4
ProcVersionSignature: Ubuntu 2.6.35-27.48-generic 2.6.35.11
Uname: Linux 2.6.35-27-generic x86_64
Architecture: amd64
Date: Wed Mar 16 15:59:26 2011
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: libinotify-ruby

** Affects: libinotify-ruby (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug maverick

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https://bugs.launchpad.net/bugs/736521

Title:
  two segfaults in ruby inotify extension library

Status in “libinotify-ruby” package in Ubuntu:
  New

Bug description:
  Binary package hint: libinotify-ruby

  Segfault #1 - Poor input type checking in rb_inotify_add_watch() throws a segfault when passed e.g. the nil object
  Segfault #2 - Closing the inotify file descriptor in a separate thread may lead to fd reuse and segfault in rb_inotify_each_event

  Supplied patch provides tests to trigger these bugs and
  a) adds a type check in rb_inotify_add_watch()
  b) sets the file descriptor to -1 in rb_inotify_close()
  c) exits rb_inotify_each_event() when the file descriptor is invalidated

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: libinotify-ruby 0.0.2-4
  ProcVersionSignature: Ubuntu 2.6.35-27.48-generic 2.6.35.11
  Uname: Linux 2.6.35-27-generic x86_64
  Architecture: amd64
  Date: Wed Mar 16 15:59:26 2011
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: libinotify-ruby