This is a note to let you know that I've just added the patch titled
net: ipv4: Use kfree_sensitive instead of kfree
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-ipv4-use-kfree_sensitive-instead-of-kfree.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4c5cfad570615aaea94ab3da1e15d7f4a773562f
Author: Wang Ming <machel@xxxxxxxx>
Date: Mon Jul 17 17:59:19 2023 +0800
net: ipv4: Use kfree_sensitive instead of kfree
[ Upstream commit daa751444fd9d4184270b1479d8af49aaf1a1ee6 ]
key might contain private part of the key, so better use
kfree_sensitive to free it.
Fixes: 38320c70d282 ("[IPSEC]: Use crypto_aead and authenc in ESP")
Signed-off-by: Wang Ming <machel@xxxxxxxx>
Reviewed-by: Tariq Toukan <tariqt@xxxxxxxxxx>
Reviewed-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index d747166bb291c..386e9875e5b80 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -1133,7 +1133,7 @@ static int esp_init_authenc(struct xfrm_state *x)
err = crypto_aead_setkey(aead, key, keylen);
free_key:
- kfree(key);
+ kfree_sensitive(key);
error:
return err;
