diff options
| author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2023-09-01 16:46:04 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-04 11:00:17 +0100 |
| commit | 718e6b51298e0f254baca0d40ab52a00e004e014 (patch) | |
| tree | a1dbc411e29d32fcbeaad32fa41cd000181fb16c /net/unix | |
| parent | 5245008738029135af52a2048d9fe9c4dd9be698 (diff) | |
af_unix: Fix msg_controllen test in scm_pidfd_recv() for MSG_CMSG_COMPAT.
Heiko Carstens reported that SCM_PIDFD does not work with MSG_CMSG_COMPAT
because scm_pidfd_recv() always checks msg_controllen against sizeof(struct
cmsghdr).
We need to use sizeof(struct compat_cmsghdr) for the compat case.
Fixes: 5e2ff6704a27 ("scm: add SO_PASSPIDFD and SCM_PIDFD")
Reported-by: Heiko Carstens <hca@linux.ibm.com>
Closes: https://lore.kernel.org/netdev/20230901200517.8742-A-hca@linux.ibm.com/
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Tested-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix')
0 files changed, 0 insertions, 0 deletions