netfilter: ipset: Fix oversized kvmalloc() calls
authorJozsef Kadlecsik <kadlec@netfilter.org>
Mon, 6 Sep 2021 16:26:34 +0000 (18:26 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 6 Oct 2021 13:56:03 +0000 (15:56 +0200)
commitda5b8b9319f044c2ca24f6602c54033931e0c1cc
treee41e492b61153932d44dba09f086138e0e537d12
parentdedfc35a2de2bae9fa3da8210a05bfd515f83fee
netfilter: ipset: Fix oversized kvmalloc() calls

commit 7bbc3d385bd813077acaf0e6fdb2a86a901f5382 upstream.

The commit

commit 7661809d493b426e979f39ab512e3adf41fbcc69
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed Jul 14 09:45:49 2021 -0700

    mm: don't allow oversized kvmalloc() calls

limits the max allocatable memory via kvmalloc() to MAX_INT. Apply the
same limit in ipset.

Reported-by: syzbot+3493b1873fb3ea827986@syzkaller.appspotmail.com
Reported-by: syzbot+2b8443c35458a617c904@syzkaller.appspotmail.com
Reported-by: syzbot+ee5cb15f4a0e85e0d54e@syzkaller.appspotmail.com
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/netfilter/ipset/ip_set_hash_gen.h