Re: [PATCH] net: fix NULL ptr dereference in nl802154_del_llsec_key

Hi, On Sat, 3 Apr 2021 at 11:18, Pavel Skripkin wrote: > > syzbot reported NULL ptr dereference in nl802154_del_llsec_key()[1] > The problem was in case of info->attrs[NL802154_ATTR_SEC_KEY] == NULL. > nla_parse_nested_deprecated()[2] doesn't check this condition before calling > nla_len()[3] >

[PATCH] net: fix NULL ptr dereference in nl802154_del_llsec_key

syzbot reported NULL ptr dereference in nl802154_del_llsec_key()[1] The problem was in case of info->attrs[NL802154_ATTR_SEC_KEY] == NULL. nla_parse_nested_deprecated()[2] doesn't check this condition before calling nla_len()[3] Call Trace: nla_len include/net/netlink.h:1148 [inline]