xfrm: fix refcount leak in __xfrm_policy_check()
[ Upstream commit 9c9cb23e ] The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks. Fix it by decreasing the reference count of `pols[0]` in that path. Fixes: 134b0fc5 ("IPsec: propagate security module errors up from flow_cache_lookup") Signed-off-by:Xin Xiong <xiongx18@fudan.edu.cn> Signed-off-by:
Xin Tan <tanxin.ctf@gmail.com> Signed-off-by:
Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by:
Sasha Levin <sashal@kernel.org>
parent
c30c0f72
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