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authorJan Engelhardt <jengelh@medozas.de>2011-03-02 12:10:13 +0100
committerPatrick McHardy <kaber@trash.net>2011-03-02 12:10:13 +0100
commit9ef0298a8e5730d9a46d640014c727f3b4152870 (patch)
treed5c676b9a9c79bc29cf1af6b8a56a471177993a6 /net/dcb
parentff75f40f44ae9b79d520bf32a05d35af74a805c0 (diff)
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netfilter: nf_log: avoid oops in (un)bind with invalid nfproto values
Like many other places, we have to check that the array index is within allowed limits, or otherwise, a kernel oops and other nastiness can ensue when we access memory beyond the end of the array. [ 5954.115381] BUG: unable to handle kernel paging request at 0000004000000000 [ 5954.120014] IP: __find_logger+0x6f/0xa0 [ 5954.123979] nf_log_bind_pf+0x2b/0x70 [ 5954.123979] nfulnl_recv_config+0xc0/0x4a0 [nfnetlink_log] [ 5954.123979] nfnetlink_rcv_msg+0x12c/0x1b0 [nfnetlink] ... The problem goes back to v2.6.30-rc1~1372~1342~31 where nf_log_bind was decoupled from nf_log_register. Reported-by: Miguel Di Ciurcio Filho <miguel.filho@gmail.com>, via irc.freenode.net/#netfilter Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
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