diff options
| author | Michal Luczaj <mhal@rbox.co> | 2025-07-03 17:18:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-17 18:37:05 +0200 |
| commit | 41a741c476e107715b33016006bac87492b48457 (patch) | |
| tree | d54d258e308e7919b5616b00dfc321f745ca68de | |
| parent | ae2c712ba39c7007de63cb0c75b51ce1caaf1da5 (diff) | |
vsock: Fix IOCTL_VM_SOCKETS_GET_LOCAL_CID to check also `transport_local`
[ Upstream commit 1e7d9df379a04ccd0c2f82f39fbb69d482e864cc ]
Support returning VMADDR_CID_LOCAL in case no other vsock transport is
available.
Fixes: 0e12190578d0 ("vsock: add local transport support in the vsock core")
Suggested-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250703-vsock-transports-toctou-v4-3-98f0eb530747@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | net/vmw_vsock/af_vsock.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 108e4cef7edd..08565e41b8e9 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -2547,6 +2547,8 @@ static long vsock_dev_do_ioctl(struct file *filp, cid = vsock_registered_transport_cid(&transport_g2h); if (cid == VMADDR_CID_ANY) cid = vsock_registered_transport_cid(&transport_h2g); + if (cid == VMADDR_CID_ANY) + cid = vsock_registered_transport_cid(&transport_local); if (put_user(cid, p) != 0) retval = -EFAULT; |