6.1-stable review patch. If anyone has any objections, please let me know.
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From: ziming zhang ezrakiez@gmail.com
commit 7fce830ecd0a0256590ee37eb65a39cbad3d64fc upstream.
The len field originates from untrusted network packets. Boundary checks have been added to prevent potential out-of-bounds writes when decrypting the connection secret or processing service tickets.
[ idryomov: changelog ]
Cc: stable@vger.kernel.org Signed-off-by: ziming zhang ezrakiez@gmail.com Reviewed-by: Ilya Dryomov idryomov@gmail.com Signed-off-by: Ilya Dryomov idryomov@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/ceph/auth_x.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/net/ceph/auth_x.c +++ b/net/ceph/auth_x.c @@ -631,6 +631,7 @@ static int handle_auth_session_key(struc
/* connection secret */ ceph_decode_32_safe(p, end, len, e_inval); + ceph_decode_need(p, end, len, e_inval); dout("%s connection secret blob len %d\n", __func__, len); if (len > 0) { dp = *p + ceph_x_encrypt_offset(); @@ -648,6 +649,7 @@ static int handle_auth_session_key(struc
/* service tickets */ ceph_decode_32_safe(p, end, len, e_inval); + ceph_decode_need(p, end, len, e_inval); dout("%s service tickets blob len %d\n", __func__, len); if (len > 0) { ret = ceph_x_proc_ticket_reply(ac, &th->session_key,