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Subject[PATCH v1] net/tcp: use kfree_sensitive() instend of kfree() in tcp_md5_twsk_free_rcu()
Date
key might contain private information, so better use
kfree_sensitive to free it.
In tcp_md5_twsk_free_rcu() use kfree_sensitive().

Signed-off-by: Minjie Du <duminjie@vivo.com>
---
net/ipv4/tcp_minisocks.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index a9807eeb311c..a7be78096783 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -368,7 +368,7 @@ static void tcp_md5_twsk_free_rcu(struct rcu_head *head)
struct tcp_md5sig_key *key;

key = container_of(head, struct tcp_md5sig_key, rcu);
- kfree(key);
+ kfree_sensitive(key);
static_branch_slow_dec_deferred(&tcp_md5_needed);
tcp_md5_release_sigpool();
}
--
2.39.0
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