apparmor: fix off-by-one comparison on MAXMAPPED_SIG
This came in yesterday, and I have verified our regression tests
were missing this and it can cause an oops. Please apply.
There is a an off-by-one comparision on sig against MAXMAPPED_SIG
that can lead to a read outside the sig_map array if sig
is MAXMAPPED_SIG. Fix this.
Verified that the check is an out of bounds case that can cause an oops.
Revised: add comparison fix to second case
Fixes: cd1dbf76b23d ("apparmor: add the ability to mediate signals")
Signed-off-by: Colin Ian King <email@example.com>
Signed-off-by: John Johansen <firstname.lastname@example.org>
Signed-off-by: Linus Torvalds <email@example.com>
1 file changed