[Bug 857504] Re: apt-get crashed with SIGSEGV in pkgDepCache::CheckDep()

[Robert Roth]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.
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https://bugs.launchpad.net/bugs/857504

Title:
  apt-get crashed with SIGSEGV in pkgDepCache::CheckDep()

Status in “apt” package in Ubuntu:
  Confirmed

Bug description:
  "Ubuntu 11.10" is a guest OS running on top of VirtualBox 4.1.2

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: apt 0.8.16~exp5ubuntu11
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  Uname: Linux 3.0.0-11-generic x86_64
  ApportVersion: 1.23-0ubuntu1
  Architecture: amd64
  CrashCounter: 1
  Date: Wed Sep 21 19:08:59 2011
  ExecutablePath: /usr/bin/apt-get
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110915.1)
  ProcCmdline: apt-get upgrade
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
  SegvAnalysis:
   Segfault happened at: 0x7f51b601af95 <_ZN11pkgDepCache8CheckDepEN8pkgCache11DepIteratorEiRNS0_11PkgIteratorE+581>:	cmp    %edx,0x14(%rax)
   PC (0x7f51b601af95) ok
   source "%edx" ok
   destination "0x14(%rax)" (0x7f51b7a68474) not located in a known VMA region (needed writable region)!
  SegvReason: writing unknown VMA
  Signal: 11
  SourcePackage: apt
  StacktraceTop:
   pkgDepCache::CheckDep(pkgCache::DepIterator, int, pkgCache::PkgIterator&) () from /usr/lib/libapt-pkg.so.4.11
   pkgDepCache::DependencyState(pkgCache::DepIterator&) () from /usr/lib/libapt-pkg.so.4.11
   pkgDepCache::Update(OpProgress*) () from /usr/lib/libapt-pkg.so.4.11
   pkgDepCache::Init(OpProgress*) () from /usr/lib/libapt-pkg.so.4.11
   pkgCacheFile::BuildDepCache(OpProgress*) () from /usr/lib/libapt-pkg.so.4.11
  Title: apt-get crashed with SIGSEGV in pkgDepCache::CheckDep()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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