diff options
| author | Jann Horn <jannh@google.com> | 2019-05-28 17:32:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-10 09:55:29 +0200 |
| commit | 4a60589dc0ced39f2a511b226bee3a562591beda (patch) | |
| tree | 9a1d0442664c41d49fed0bd073fa99e214ae9659 /Kbuild | |
| parent | 8b034f18a4a3e1324a9fa29e1d791d624f196fb4 (diff) | |
apparmor: enforce nullbyte at end of tag string
commit 8404d7a674c49278607d19726e0acc0cae299357 upstream.
A packed AppArmor policy contains null-terminated tag strings that are read
by unpack_nameX(). However, unpack_nameX() uses string functions on them
without ensuring that they are actually null-terminated, potentially
leading to out-of-bounds accesses.
Make sure that the tag string is null-terminated before passing it to
strcmp().
Cc: stable@vger.kernel.org
Fixes: 736ec752d95e ("AppArmor: policy routines for loading and unpacking policy")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions