lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:   Wed,  6 Jul 2022 15:48:26 +0800
From:   Jianglei Nie <>
        Jianglei Nie <>
Subject: [PATCH] net: macsec: fix potential resource leak in macsec_add_rxsa() and macsec_add_txsa()

init_rx_sa() allocates relevant resource for rx_sa->stats and rx_sa->
key.tfm with alloc_percpu() and macsec_alloc_tfm(). When some error
occurs after init_rx_sa() is called in macsec_add_rxsa(), the function
released rx_sa with kfree() without releasing rx_sa->stats and rx_sa->
key.tfm, which will lead to a resource leak.

We should call macsec_rxsa_put() instead of kfree() to decrease the ref
count of rx_sa and release the relevant resource if the refcount is 0.
The same bug exists in macsec_add_txsa() for tx_sa as well. This patch
fixes the above two bugs.

Signed-off-by: Jianglei Nie <>
 drivers/net/macsec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 817577e713d7..ac3ff624a8dd 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -1842,7 +1842,7 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info)
 	return 0;
-	kfree(rx_sa);
+	macsec_rxsa_put(rx_sa);
 	return err;
@@ -2085,7 +2085,7 @@ static int macsec_add_txsa(struct sk_buff *skb, struct genl_info *info)
 	secy->operational = was_operational;
-	kfree(tx_sa);
+	macsec_txsa_put(tx_sa);
 	return err;

Powered by blists - more mailing lists