Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | Minjie Du <> | Subject | [PATCH v1] net/tcp: use kfree_sensitive() instend of kfree() in tcp_md5_twsk_free_rcu() | Date | Tue, 7 Nov 2023 10:34:43 +0800 |
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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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