5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Michal Luczaj mhal@rbox.co
[ 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@... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/vmw_vsock/af_vsock.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index f2caef4cda67d..c4006e09db091 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -2338,6 +2338,8 @@ 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;