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| author | Jianglei Nie <niejianglei2021@163.com> | 2022-07-22 11:29:02 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-07-25 12:51:05 +0200 |
| commit | c7b205fbbf3cffa374721bb7623f7aa8c46074f1 (patch) | |
| tree | 35cd754fb9f0af9f0bc82cb8d1d19b35495152be /drivers/net/macsec.c | |
| parent | Merge branch 'macsec-config-issues' (diff) | |
| download | linux-c7b205fbbf3cffa374721bb7623f7aa8c46074f1.tar.xz linux-c7b205fbbf3cffa374721bb7623f7aa8c46074f1.zip | |
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.
Fixes: 3cf3227a21d1 ("net: macsec: hardware offloading infrastructure")
Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/macsec.c')
| -rw-r--r-- | drivers/net/macsec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 95578f04f212..f354fad05714 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -1844,7 +1844,7 @@ static int macsec_add_rxsa(struct sk_buff *skb, struct genl_info *info) return 0; cleanup: - kfree(rx_sa); + macsec_rxsa_put(rx_sa); rtnl_unlock(); return err; } @@ -2087,7 +2087,7 @@ static int macsec_add_txsa(struct sk_buff *skb, struct genl_info *info) cleanup: secy->operational = was_operational; - kfree(tx_sa); + macsec_txsa_put(tx_sa); rtnl_unlock(); return err; } |