msm-4.14

mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00

History

Jann Horn b692c405a1 sys: don't hold uts_sem while accessing userspace memory

commit 42a0cc3478584d4d63f68f2f5af021ddbea771fa upstream.

Holding uts_sem as a writer while accessing userspace memory allows a
namespace admin to stall all processes that attempt to take uts_sem.
Instead, move data through stack buffers and don't access userspace memory
while uts_sem is held.

Cc: stable@vger.kernel.org
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-09-09 19:56:00 +02:00

boot

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

include

locking/xchg/alpha: Fix xchg() and cmpxchg() memory ordering bugs

2018-05-30 07:52:02 +02:00

kernel

sys: don't hold uts_sem while accessing userspace memory

2018-09-09 19:56:00 +02:00

lib

License cleanup: add SPDX GPL-2.0 license identifier to files with no license