linux-toradex.git/security, branch tegra-10.11.1.1

security: Add AID_NET_RAW and AID_NET_ADMIN capability check in cap_capable().

2010-09-30T00:49:19+00:00

Signed-off-by: Chia-chi Yeh

TOMOYO: Don't abuse sys_getpid(), sys_getppid()

2010-09-27T00:53:18+00:00

System call entry functions sys_*() are never to be called from
general kernel code.  The fact that they aren't declared in header
files should have been a clue.  These functions also don't exist on
Alpha since it has sys_getxpid() instead.

Signed-off-by: Ben Hutchings 
Acked-by: Tetsuo Handa 
Signed-off-by: James Morris

KEYS: Fix bug in keyctl_session_to_parent() if parent has no session keyring

2010-09-10T14:30:00+00:00

Fix a bug in keyctl_session_to_parent() whereby it tries to check the ownership
of the parent process's session keyring whether or not the parent has a session
keyring [CVE-2010-2960].

This results in the following oops:

  BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0
  IP: [] keyctl_session_to_parent+0x251/0x443
  ...
  Call Trace:
   [] ? keyctl_session_to_parent+0x67/0x443
   [] ? __do_fault+0x24b/0x3d0
   [] sys_keyctl+0xb4/0xb8
   [] system_call_fastpath+0x16/0x1b

if the parent process has no session keyring.

If the system is using pam_keyinit then it mostly protected against this as all
processes derived from a login will have inherited the session keyring created
by pam_keyinit during the log in procedure.

To test this, pam_keyinit calls need to be commented out in /etc/pam.d/.

Reported-by: Tavis Ormandy 
Signed-off-by: David Howells 
Acked-by: Tavis Ormandy 
Signed-off-by: Linus Torvalds

KEYS: Fix RCU no-lock warning in keyctl_session_to_parent()

2010-09-10T14:30:00+00:00

There's an protected access to the parent process's credentials in the middle
of keyctl_session_to_parent().  This results in the following RCU warning:

  ===================================================
  [ INFO: suspicious rcu_dereference_check() usage. ]
  ---------------------------------------------------
  security/keys/keyctl.c:1291 invoked rcu_dereference_check() without protection!

  other info that might help us debug this:

  rcu_scheduler_active = 1, debug_locks = 0
  1 lock held by keyctl-session-/2137:
   #0:  (tasklist_lock){.+.+..}, at: [] keyctl_session_to_parent+0x60/0x236

  stack backtrace:
  Pid: 2137, comm: keyctl-session- Not tainted 2.6.36-rc2-cachefs+ #1
  Call Trace:
   [] lockdep_rcu_dereference+0xaa/0xb3
   [] keyctl_session_to_parent+0xed/0x236
   [] sys_keyctl+0xb4/0xb6
   [] system_call_fastpath+0x16/0x1b

The code should take the RCU read lock to make sure the parents credentials
don't go away, even though it's holding a spinlock and has IRQ disabled.

Signed-off-by: David Howells 
Signed-off-by: Linus Torvalds

ima: always maintain counters

2010-09-07T23:51:41+00:00

commit 8262bb85da allocated the inode integrity struct (iint) before any
inodes were created. Only after IMA was initialized in late_initcall were
the counters updated. This patch updates the counters, whether or not IMA
has been initialized, to resolve 'imbalance' messages.

This patch fixes the bug as reported in bugzilla: 15673.  When the i915
is builtin, the ring_buffer is initialized before IMA, causing the
imbalance message on suspend.

Reported-by: Thomas Meyer 
Signed-off-by: Mimi Zohar 
Tested-by: Thomas Meyer 
Tested-by: David Safford
Cc: Stable Kernel 
Signed-off-by: James Morris

AppArmor: Fix locking from removal of profile namespace

2010-09-07T23:19:34+00:00

The locking for profile namespace removal is wrong, when removing a
profile namespace, it needs to be removed from its parent's list.
Lock the parent of namespace list instead of the namespace being removed.

Signed-off-by: John Johansen 
Signed-off-by: James Morris

AppArmor: Fix splitting an fqname into separate namespace and profile names

2010-09-07T23:19:31+00:00

As per Dan Carpenter 
  If we have a ns name without a following profile then in the original
  code it did "*ns_name = &name[1];".  "name" is NULL so "*ns_name" is
  0x1.  That isn't useful and could cause an oops when this function is
  called from aa_remove_profiles().

Beyond this the assignment of the namespace name was wrong in the case
where the profile name was provided as it was being set to &name[1]
after name  = skip_spaces(split + 1);

Move the ns_name assignment before updating name for the split and
also add skip_spaces, making the interface more robust.

Signed-off-by: John Johansen 
Signed-off-by: James Morris

AppArmor: Fix security_task_setrlimit logic for 2.6.36 changes

2010-09-07T23:19:29+00:00

2.6.36 introduced the abilitiy to specify the task that is having its
rlimits set.  Update mediation to ensure that confined tasks can only
set their own group_leader as expected by current policy.

Add TODO note about extending policy to support setting other tasks
rlimits.

Signed-off-by: John Johansen 
Signed-off-by: James Morris

AppArmor: Drop hack to remove appended " (deleted)" string

2010-09-07T23:19:24+00:00

The 2.6.36 kernel has refactored __d_path() so that it no longer appends
" (deleted)" to unlinked paths.  So drop the hack that was used to detect
and remove the appended string.

Signed-off-by: John Johansen 
Signed-off-by: James Morris

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2010-08-18T16:35:08+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  fs: brlock vfsmount_lock
  fs: scale files_lock
  lglock: introduce special lglock and brlock spin locks
  tty: fix fu_list abuse
  fs: cleanup files_lock locking
  fs: remove extra lookup in __lookup_hash
  fs: fs_struct rwlock to spinlock
  apparmor: use task path helpers
  fs: dentry allocation consolidation
  fs: fix do_lookup false negative
  mbcache: Limit the maximum number of cache entries
  hostfs ->follow_link() braino
  hostfs: dumb (and usually harmless) tpyo - strncpy instead of strlcpy
  remove SWRITE* I/O types
  kill BH_Ordered flag
  vfs: update ctime when changing the file's permission by setfacl
  cramfs: only unlock new inodes
  fix reiserfs_evict_inode end_writeback second call