shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 19:30:30 +09:00
Code Issues Packages Projects Releases Wiki Activity

RDMA/ucma: Check that user doesn't overflow QP state

Browse Source 
commit a5880b8443 upstream.

The QP state is limited and declared in enum ib_qp_state,
but ucma user was able to supply any possible (u32) value.

Reported-by: syzbot+0df1ab766f8924b1edba@syzkaller.appspotmail.com
Fixes: 7521663857 ("RDMA/cma: Export rdma cm interface to userspace")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Leon Romanovsky
2018-03-07 18:49:16 +02:00
committed by Greg Kroah-Hartman
parent e126e3eaa2
commit b063d53d7a
1 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/infiniband/core/ucma.c
View File

@@ -1139,6 +1139,9 @@ static ssize_t ucma_init_qp_attr(struct ucma_file *file,
if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
return -EFAULT;
if (cmd.qp_state > IB_QPS_ERR)
return -EINVAL;
ctx = ucma_get_ctx(file, cmd.id);
if (IS_ERR(ctx))
return PTR_ERR(ctx);