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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-06-10 11:58:52 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-06-22 12:34:21 -0400 |
| commit | c09cc2c319863f620caf5e723db496eed55f7c7f (patch) | |
| tree | a4e02555cb4414ee5a511125fbd063adafa31785 /security | |
| parent | 24eae8ebfb29ca54980764245ffb8aa218666ff6 (diff) | |
| download | linux-c09cc2c319863f620caf5e723db496eed55f7c7f.tar.bz2 | |
vhost_vdpa: Fix potential underflow in vhost_vdpa_mmap()
The "vma->vm_pgoff" variable is an unsigned long so if it's larger than
INT_MAX then "index" can be negative leading to an underflow. Fix this
by changing the type of "index" to "unsigned long".
Fixes: ddd89d0a059d ("vhost_vdpa: support doorbell mapping via mmap")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200610085852.GB5439@mwanda
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions