net: tls: fix possible race condition between do_tls_getsockopt_conf() and do_tls_setsockopt_conf()

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[ Upstream commit 49c47cc21b ]

ctx->crypto_send.info is not protected by lock_sock in
do_tls_getsockopt_conf(). A race condition between do_tls_getsockopt_conf()
and error paths of do_tls_setsockopt_conf() may lead to a use-after-free
or null-deref.

More discussion:  https://lore.kernel.org/all/Y/ht6gQL+u6fj3dG@hog/

Fixes: 3c4d755915 ("tls: kernel TLS support")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
Link: https://lore.kernel.org/r/20230228023344.9623-1-hbh25y@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Hangyu Hua 2023-02-28 10:33:44 +08:00 • committed by Greg Kroah-Hartman

parent 34869f8e71

commit 14c17c673e

1 changed files with 5 additions and 18 deletions

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net/tls/tls_main.c

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