netfilter: ipset: add missing range check in bitmap_ip_uadt

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commit 35f56c554e upstream.

When tb[IPSET_ATTR_IP_TO] is not present but tb[IPSET_ATTR_CIDR] exists,
the values of ip and ip_to are slightly swapped. Therefore, the range check
for ip should be done later, but this part is missing and it seems that the
vulnerability occurs.

So we should add missing range checks and remove unnecessary range checks.

Cc: <stable@vger.kernel.org>
Reported-by: syzbot+58c872f7790a4d2ac951@syzkaller.appspotmail.com
Fixes: 72205fc68b ("netfilter: ipset: bitmap:ip set type support")
Signed-off-by: Jeongjun Park <aha310510@gmail.com>
Acked-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Jeongjun Park 2024-11-13 22:02:09 +09:00 • committed by Greg Kroah-Hartman

parent 9f2d8f3e81

commit e67471437a

1 changed files with 2 additions and 5 deletions

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net/netfilter/ipset/ip_set_bitmap_ip.c

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