** Changed in: linux-ec2 (Ubuntu Oneiric) Status: New => Invalid ** Changed in: linux-ec2 (Ubuntu Oneiric) Importance: Undecided => Low
** Changed in: linux-ec2 (Ubuntu Natty) Status: New => Invalid ** Changed in: linux-ec2 (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux-lts-backport-oneiric (Ubuntu Oneiric) Status: New => Invalid ** Changed in: linux-lts-backport-oneiric (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux-lts-backport-oneiric (Ubuntu Natty) Status: New => Invalid ** Changed in: linux-lts-backport-oneiric (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux-lts-backport-natty (Ubuntu Oneiric) Status: New => Invalid ** Changed in: linux-lts-backport-natty (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux-lts-backport-natty (Ubuntu Natty) Status: New => Invalid ** Changed in: linux-lts-backport-natty (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux-mvl-dove (Ubuntu Oneiric) Status: New => Invalid ** Changed in: linux-mvl-dove (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux-mvl-dove (Ubuntu Natty) Status: New => Invalid ** Changed in: linux-mvl-dove (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux-lts-backport-maverick (Ubuntu Oneiric) Status: New => Invalid ** Changed in: linux-lts-backport-maverick (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux-lts-backport-maverick (Ubuntu Natty) Status: New => Invalid ** Changed in: linux-lts-backport-maverick (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux-ti-omap4 (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux-ti-omap4 (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux-fsl-imx51 (Ubuntu Oneiric) Status: New => Invalid ** Changed in: linux-fsl-imx51 (Ubuntu Oneiric) Importance: Undecided => Low ** Changed in: linux-fsl-imx51 (Ubuntu Natty) Status: New => Invalid ** Changed in: linux-fsl-imx51 (Ubuntu Natty) Importance: Undecided => Low ** Changed in: linux (Ubuntu Oneiric) Status: Fix Released => New ** Changed in: linux (Ubuntu Natty) Status: Fix Released => New ** Description changed: - SRU Justification: + kernel/AppArmor local denial of service - Impact: Crashes application attempting improperly formatted write to - /proc/<pid>/attr/current - - Fix: Upstream commit a5b2c5b2ad5853591a6cac6134cd0f599a720865 - - Test Case: echo 'AAA AAA' > /proc/$$/attr/current - The terminal/shell/tab the command is run in will crash and a kernel Bug will be logged - - === - - test case (from gnome-terminal+bash): - emanuel@emanuel-desktop:~$ echo 'AAA AAA' > /proc/$$/attr/current # the tab crashed - emanuel@emanuel-desktop:~$ dmesg | tail -n 28 # on other tab in gnome-terminal - [107353.169116] ------------[ cut here ]------------ - [107353.169142] kernel BUG at /build/buildd/linux-2.6.38/security/apparmor/audit.c:183! - [107353.169159] invalid opcode: 0000 [#7] SMP - [107353.169176] last sysfs file: /sys/devices/pci0000:00/0000:00:0d.0/host2/target2:0:0/2:0:0:0/block/sda/sda1/uevent - [107353.169193] Modules linked in: nls_utf8 isofs vesafb binfmt_misc vboxsf snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq ppdev snd_timer snd_seq_device snd joydev psmouse parport_pc serio_raw vboxguest soundcore i2c_piix4 snd_page_alloc lp parport usbhid ahci hid e1000 libahci - [107353.169251] - [107353.169268] Pid: 8851, comm: bash Tainted: G D 2.6.38-8-generic #42-Ubuntu innotek GmbH VirtualBox - [107353.169289] EIP: 0060:[<c1244939>] EFLAGS: 00210246 CPU: 0 - [107353.169313] EIP is at aa_audit+0x129/0x160 - [107353.169329] EAX: 00000002 EBX: f2c35eb4 ECX: 000000d0 EDX: 00000000 - [107353.169344] ESI: 00000008 EDI: f2c35f1c EBP: f2c35e90 ESP: f2c35e84 - [107353.169360] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 - [107353.169376] Process bash (pid: 8851, ti=f2c34000 task=c6c01940 task.ti=f2c34000) - [107353.169389] Stack: - [107353.169402] 00000004 00000008 f2c35f1c f2c35f2c c1249a95 f2c35eb4 00000000 d0e4e000 - [107353.169424] 00000000 d0e4e004 d0dd0aa4 d0e4e004 00000007 00000000 00000000 00000000 - [107353.169784] 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 - [107353.169808] Call Trace: - [107353.169832] [<c1249a95>] apparmor_setprocattr+0x205/0x210 - [107353.169856] [<c121c40e>] security_setprocattr+0x1e/0x30 - [107353.169877] [<c1171c26>] proc_pid_attr_write+0xe6/0x100 - [107353.169896] [<c11271a2>] vfs_write+0xa2/0x170 - [107353.169915] [<c1171b40>] ? proc_pid_attr_write+0x0/0x100 - [107353.169932] [<c1127482>] sys_write+0x42/0x70 - [107353.169955] [<c1509bf4>] syscall_call+0x7/0xb - [107353.169969] Code: 00 00 8b 4b 04 85 c9 74 19 31 d2 b8 09 00 00 00 e8 2d cb e1 ff 8b 43 40 e9 62 ff ff ff 90 8d 74 26 00 64 8b 0d ec 54 83 c1 eb de <0f> 0b 83 3d 18 a2 90 c1 01 74 16 83 7a 3c 01 74 10 8b 0d 1c a2 - [107353.170048] EIP: [<c1244939>] aa_audit+0x129/0x160 SS:ESP 0068:f2c35e84 - [107353.170073] ---[ end trace 824fc722cb1d8e19 ]--- - - tested on : Ubuntu 11.04 32 bit inside VirtualBox . + Break-Fix: - a5b2c5b2ad5853591a6cac6134cd0f599a720865 -- You received this bug notification because you are a member of AppArmor Developers, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/789409 Title: /proc/[PID]/attr/current overwrite Null pointer dereference Status in AppArmor Linux application security framework: Fix Released Status in “linux” package in Ubuntu: Fix Released Status in “linux-ec2” package in Ubuntu: New Status in “linux-fsl-imx51” package in Ubuntu: New Status in “linux-lts-backport-maverick” package in Ubuntu: New Status in “linux-lts-backport-natty” package in Ubuntu: New Status in “linux-lts-backport-oneiric” package in Ubuntu: New Status in “linux-mvl-dove” package in Ubuntu: New Status in “linux-ti-omap4” package in Ubuntu: New Status in “linux” source package in Natty: New Status in “linux-ec2” source package in Natty: Invalid Status in “linux-fsl-imx51” source package in Natty: Invalid Status in “linux-lts-backport-maverick” source package in Natty: Invalid Status in “linux-lts-backport-natty” source package in Natty: Invalid Status in “linux-lts-backport-oneiric” source package in Natty: Invalid Status in “linux-mvl-dove” source package in Natty: Invalid Status in “linux-ti-omap4” source package in Natty: New Status in “linux” source package in Oneiric: New Status in “linux-ec2” source package in Oneiric: Invalid Status in “linux-fsl-imx51” source package in Oneiric: Invalid Status in “linux-lts-backport-maverick” source package in Oneiric: Invalid Status in “linux-lts-backport-natty” source package in Oneiric: Invalid Status in “linux-lts-backport-oneiric” source package in Oneiric: Invalid Status in “linux-mvl-dove” source package in Oneiric: Invalid Status in “linux-ti-omap4” source package in Oneiric: New Bug description: kernel/AppArmor local denial of service Break-Fix: - a5b2c5b2ad5853591a6cac6134cd0f599a720865 To manage notifications about this bug go to: https://bugs.launchpad.net/apparmor/+bug/789409/+subscriptions -- AppArmor mailing list AppArmor@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/apparmor