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(parent: c19d65c) | patch
netfilter: nf_conntrack: use RCU safe kfree for conntrack extensions
authorMichal Kubeček <mkubecek@suse.cz>
Wed, 11 Sep 2013 08:17:27 +0000 (10:17 +0200)
committerPablo Neira Ayuso <pablo@netfilter.org>
Fri, 13 Sep 2013 09:58:40 +0000 (11:58 +0200)
commitc13a84a830a208fb3443628773c8ca0557773cc7
tree9d1c7a2d6e73a7bcb9af3b753eeccac73c43b47atree | snapshot
parentc19d65c95c6d472d69829fea7d473228493d5245commit | diff
netfilter: nf_conntrack: use RCU safe kfree for conntrack extensions

Commit 68b80f11 (netfilter: nf_nat: fix RCU races) introduced
RCU protection for freeing extension data when reallocation
moves them to a new location. We need the same protection when
freeing them in nf_ct_ext_free() in order to prevent a
use-after-free by other threads referencing a NAT extension data
via bysource list.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
include/net/netfilter/nf_conntrack_extend.h diff | blob | history
Andy's Linux Kernel repo