aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/highmem.h
diff options
context:
space:
mode:
authorOleg Nesterov <oleg@redhat.com>2009-06-16 18:27:10 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-16 18:36:17 -0400
commit8eeee4e2f04fc551f50c9d9847da2d73d7d33728 (patch)
treec5b7a2c9b912369c82506f8363b8eb10538f5d8e /include/linux/highmem.h
parentf83b1e616f2f68b56b09b2f5116591981fee0c1c (diff)
send_sigio_to_task: sanitize the usage of fown->signum
send_sigio_to_task() reads fown->signum several times, we can race with F_SETSIG which changes ->signum lockless. In theory, this can fool security checks or we can call group_send_sig_info() with the wrong ->si_signo which does not match "int sig". Change the code to cache ->signum. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/highmem.h')
0 files changed, 0 insertions, 0 deletions