diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2014-06-23 14:22:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-30 20:14:04 -0700 |
| commit | a8e9e3d06557c580665d1ac5a6059cb7b9b4a01e (patch) | |
| tree | d8935083c36a1a18a42f311ffcbb39dbc1c42c13 /fs/eventpoll.c | |
| parent | 96ae603f57d56daec8f56c83d8d1a71ca2e06162 (diff) | |
x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
commit 554086d85e71f30abe46fc014fea31929a7c6a8a upstream.
The bad syscall nr paths are their own incomprehensible route
through the entry control flow. Rearrange them to work just like
syscalls that return -ENOSYS.
This fixes an OOPS in the audit code when fast-path auditing is
enabled and sysenter gets a bad syscall nr (CVE-2014-4508).
This has probably been broken since Linux 2.6.27:
af0575bba0 i386 syscall audit fast-path
Cc: Roland McGrath <roland@redhat.com>
Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/e09c499eade6fc321266dd6b54da7beb28d6991c.1403558229.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/eventpoll.c')
0 files changed, 0 insertions, 0 deletions