ksmbd: Fix dangling pointer in krb_authenticate

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commit 1e440d5b25 upstream.

krb_authenticate frees sess->user and does not set the pointer
to NULL. It calls ksmbd_krb5_authenticate to reinitialise
sess->user but that function may return without doing so. If
that happens then smb2_sess_setup, which calls krb_authenticate,
will be accessing free'd memory when it later uses sess->user.

Cc: stable@vger.kernel.org
Signed-off-by: Sean Heelan <seanheelan@gmail.com>
Acked-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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Sean Heelan 2025-04-07 11:26:50 +00:00 • committed by Greg Kroah-Hartman

parent f95a2ec3ec

commit d5b554bc8d

1 changed files with 3 additions and 1 deletions

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fs/smb/server/smb2pdu.c

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