Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba(a)kernel.org>rg>:
On Thu, 22 Jun 2023 14:32:31 -0700 you wrote:
syzkaller reported use-after-free in
__gtp_encap_destroy(). [0]
It shows the same process freed sk and touched it illegally.
Commit e198987e7dd7 ("gtp: fix suspicious RCU usage") added lock_sock()
and release_sock() in __gtp_encap_destroy() to protect sk->sk_user_data,
but release_sock() is called after sock_put() releases the last refcnt.
[...]
Here is the summary with links:
- [v1,net] gtp: Fix use-after-free in __gtp_encap_destroy().
https://git.kernel.org/netdev/net/c/ce3aee7114c5
You are awesome, thank you!
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