diff options
| author | Andrea Parri (Microsoft) <parri.andrea@gmail.com> | 2021-03-01 19:25:30 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-01 15:30:52 -0800 |
| commit | 3946688edbc5b629110c339b3babf10aa9e7adad (patch) | |
| tree | b72e021c1b857c4407f941010280e78d6296b573 /net | |
| parent | 9200f515c41f4cbaeffd8fdd1d8b6373a18b1b67 (diff) | |
hv_netvsc: Fix validation in netvsc_linkstatus_callback()
Contrary to the RNDIS protocol specification, certain (pre-Fe)
implementations of Hyper-V's vSwitch did not account for the status
buffer field in the length of an RNDIS packet; the bug was fixed in
newer implementations. Validate the status buffer fields using the
length of the 'vmtransfer_page' packet (all implementations), that
is known/validated to be less than or equal to the receive section
size and not smaller than the length of the RNDIS message.
Reported-by: Dexuan Cui <decui@microsoft.com>
Suggested-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Fixes: 505e3f00c3f36 ("hv_netvsc: Add (more) validation for untrusted Hyper-V values")
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions