ksmbd: fix deadlock in ksmbd_find_crypto_ctx()

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commit 7b4323373d upstream.

Deadlock is triggered by sending multiple concurrent session setup
requests. It should be reused after releasing when getting ctx for crypto.
Multiple consecutive ctx uses cause deadlock while waiting for releasing
due to the limited number of ctx.

Cc: stable@vger.kernel.org
Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-20591
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Namjae Jeon 2023-05-03 08:44:14 +09:00 • committed by Greg Kroah-Hartman

parent 1f04905865

commit 18973b73fa

1 changed files with 11 additions and 8 deletions

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fs/ksmbd/auth.c

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