net_sched: keep alloc_hash updated after hash allocation
In commit 599be01e ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash(). Reported-and-tested-by:<syzbot+dcc34d54d68ef7d2d53d@syzkaller.appspotmail.com> Reported-and-tested-by:
<syzbot+c72da7b9ed57cde6fca2@syzkaller.appspotmail.com> Fixes: 599be01e ("net_sched: fix an OOB access in cls_tcindex") Cc: Jamal Hadi Salim <jhs@mojatatu.com> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
b1be2e8c
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