[Bug 968753] Re: ssh crashed with SIGSEGV

[Colin Watson]

We should merge from Debian instead, since the diff from 1.0.1-2 to
1.0.1-4, discounting things we already have, is exactly this change.  I
agreed with Clint on #ubuntu-release that I'd take care of this.

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Title:
  ssh crashed with SIGSEGV

Status in “openssh” package in Ubuntu:
  Invalid
Status in “openssl” package in Ubuntu:
  Triaged
Status in “openssh” source package in Precise:
  Invalid
Status in “openssl” source package in Precise:
  Triaged

Bug description:
  trying to login to certain hosts (Cisco, Solaris) using ssh causes
  segfault immediately following  the authentication stage.

  ApportVersion: 1.95-0ubuntu1
  Dependencies:
   adduser 3.113ubuntu2
   coreutils 8.13-3ubuntu2
   debconf 1.5.42ubuntu1
   debianutils 4.2.1ubuntu2
   dpkg 1.16.1.2ubuntu5
   gcc-4.6-base 4.6.3-1ubuntu3
   libacl1 2.2.51-5ubuntu1
   libattr1 1:2.4.46-5ubuntu1
   libbsd0 0.3.0-1build1
   libbz2-1.0 1.0.6-1
   libc-bin 2.15-0ubuntu6
   libc6 2.15-0ubuntu6
   libcomerr2 1.42-1ubuntu1
   libdb5.1 5.1.25-11build1
   libedit2 2.11-20080614-3ubuntu1
   libgcc1 1:4.6.3-1ubuntu3
   libgssapi-krb5-2 1.10+dfsg~beta1-2
   libk5crypto3 1.10+dfsg~beta1-2
   libkeyutils1 1.5.2-2
   libkrb5-3 1.10+dfsg~beta1-2
   libkrb5support0 1.10+dfsg~beta1-2
   liblzma5 5.1.1alpha+20110809-3
   libpam-modules 1.1.3-7ubuntu2
   libpam-modules-bin 1.1.3-7ubuntu2
   libpam0g 1.1.3-7ubuntu2
   libselinux1 2.1.0-4.1ubuntu1
   libssl1.0.0 1.0.1-2ubuntu2
   libtinfo5 5.9-4
   multiarch-support 2.15-0ubuntu6
   passwd 1:4.1.4.2+svn3283-3ubuntu4
   perl-base 5.14.2-6ubuntu2
   sensible-utils 0.0.6ubuntu2
   tar 1.26-4
   tzdata 2012b-1
   xz-utils 5.1.1alpha+20110809-3
   zlib1g 1:1.2.3.4.dfsg-3ubuntu4
  Disassembly:
   => 0xb757944d: movdqu (%edx),%xmm0
      0xb7579451: jne    0xb7579370
      0xb7579457: movdqa 0x60(%ebx),%xmm4
      0xb757945c: pshufb %xmm2,%xmm4
      0xb7579461: pxor   %xmm0,%xmm4
      0xb7579465: movdqa 0x70(%ebx),%xmm0
      0xb757946a: movdqa (%ecx),%xmm2
      0xb757946e: pshufb %xmm3,%xmm0
      0xb7579473: pxor   %xmm4,%xmm0
      0xb7579477: pshufb %xmm2,%xmm0
      0xb757947c: ret    
      0xb757947d: lea    0x0(%esi),%esi
      0xb7579480: add    (%esp),%ebp
      0xb7579483: movdqu (%esi),%xmm0
      0xb7579487: movdqa 0x140(%ebp),%xmm2
      0xb757948f: movdqa %xmm0,%xmm3
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
  Package: openssh-client 1:5.9p1-4ubuntu1
  PackageArchitecture: i386
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
  Registers:
   eax            0x2def2882      770648194
   ecx            0xb7578f80      -1218998400
   edx            0xb938aff8      -1187467272
   ebx            0xb75790d0      -1218998064
   esp            0xbf8ba31c      0xbf8ba31c
   ebp            0xb7578e70      0xb7578e70
   esi            0xb937ce90      -1187524976
   edi            0xffffdd90      -8816
   eip            0xb757944d      0xb757944d
   eflags         0x10206 [ PF IF RF ]
   cs             0x73    115
   ss             0x7b    123
   ds             0x7b    123
   es             0x7b    123
   fs             0x0     0
   gs             0x33    51
  RelatedPackageVersions:
   ssh-askpass       N/A
   libpam-ssh        N/A
   keychain          2.7.1-1
   ssh-askpass-gnome 1:5.9p1-4ubuntu1
  SSHClientVersion: OpenSSH_5.9p1 Debian-4ubuntu1, OpenSSL 1.0.1 14 Mar 2012
  SegvAnalysis:
   Segfault happened at: 0xb757944d:      movdqu (%edx),%xmm0
   PC (0xb757944d) ok
   source "(%edx)" (0xb938aff8) ok
   destination "%xmm0" ok
   SP (0xbf8ba31c) ok
   Reason could not be automatically determined.
  SourcePackage: openssh
  Stacktrace:
   #0  0xb757944d in ?? () from /lib/i386-linux-gnu/libcrypto.so.1.0.0
   No symbol table info available.
   Cannot access memory at address 0xb7578e74
  StacktraceTop: ?? () from /lib/i386-linux-gnu/libcrypto.so.1.0.0
  Tags:  precise
  ThreadStacktrace:
   .
   Thread 1 (Thread 0xb71fa740 (LWP 30147)):
   #0  0xb757944d in ?? () from /lib/i386-linux-gnu/libcrypto.so.1.0.0
   No symbol table info available.
   Cannot access memory at address 0xb7578e74
  Title: ssh crashed with SIGSEGV
  UpgradeStatus: No upgrade log present (probably fresh install)

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: openssh-client 1:5.9p1-4ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
  Uname: Linux 3.2.0-20-generic-pae i686
  ApportVersion: 1.95-0ubuntu1
  Architecture: i386
  Date: Thu Mar 29 17:23:17 2012
  ExecutablePath: /usr/bin/ssh
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
  ProcCmdline: ssh trumpeter
  ProcEnviron:
   TERM=screen
   SHELL=/bin/bash
   LANG=en_US.UTF-8
   LANGUAGE=
  SSHClientVersion: OpenSSH_5.9p1 Debian-4ubuntu1, OpenSSL 1.0.1 14 Mar 2012
  Signal: 11
  SourcePackage: openssh
  StacktraceTop: ?? () from /lib/i386-linux-gnu/libcrypto.so.1.0.0
  Title: ssh crashed with SIGSEGV
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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