linux/net/tls
Kuniyuki Iwashima f09cd20935 tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock().
commit c65f27b9c3 upstream.

get_netdev_for_sock() is called during setsockopt(),
so not under RCU.

Using sk_dst_get(sk)->dev could trigger UAF.

Let's use __sk_dst_get() and dst_dev_rcu().

Note that the only ->ndo_sk_get_lower_dev() user is
bond_sk_get_lower_dev(), which uses RCU.

Fixes: e8f6979981 ("net/tls: Add generic NIC offload infrastructure")
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://patch.msgid.link/20250916214758.650211-6-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ Keerthana: Backport to v6.12.y ]
Signed-off-by: Keerthana K <keerthana.kalyanasundaram@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-01-17 16:31:18 +01:00
..
Kconfig net: skbuff: generalize the skb->decrypted bit 2024-04-06 17:34:31 +01:00
Makefile tls: rx: async: hold onto the input skb 2022-07-18 11:24:11 +01:00
tls.h tls: make sure to abort the stream if headers are bogus 2025-09-25 11:13:44 +02:00
tls_device.c tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock(). 2026-01-17 16:31:18 +01:00
tls_device_fallback.c Revert "net: mirror skb frag ref/unref helpers" 2024-05-03 16:05:53 -07:00
tls_main.c tls: always set record_type in tls_process_cmsg 2025-10-23 16:20:31 +02:00
tls_proc.c tls: rx: add counter for NoPad violations 2022-07-11 19:48:33 -07:00
tls_strp.c tls: make sure to abort the stream if headers are bogus 2025-09-25 11:13:44 +02:00
tls_sw.c tls: don't rely on tx_work during send() 2025-10-23 16:20:31 +02:00
tls_toe.c tls: create an internal header 2022-07-08 18:38:45 -07:00
trace.c net/tls: add tracing for device/offload events 2019-10-05 16:29:00 -07:00
trace.h move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00