Check if the provided flags value from the vsock address data structure
includes the supported flags in the corresponding kernel version.
The first byte of the "svm_zero" field is used as "svm_flags", so add
the flags check instead.
Changelog
v3 -> v4
* New patch in v4.
Signed-off-by: Andra Paraschiv <andra...@amazon.com>
---
net/vmw_vsock/vsock_addr.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/net/vmw_vsock/vsock_addr.c b/net/vmw_vsock/vsock_addr.c
index 909de26cb0e70..223b9660a759f 100644
--- a/net/vmw_vsock/vsock_addr.c
+++ b/net/vmw_vsock/vsock_addr.c
@@ -22,13 +22,15 @@ EXPORT_SYMBOL_GPL(vsock_addr_init);
int vsock_addr_validate(const struct sockaddr_vm *addr)
{
+ __u8 svm_valid_flags = VMADDR_FLAG_TO_HOST;
+
if (!addr)
return -EFAULT;
if (addr->svm_family != AF_VSOCK)
return -EAFNOSUPPORT;
- if (addr->svm_zero[0] != 0)
+ if (addr->svm_flags & ~svm_valid_flags)
return -EINVAL;
return 0;
--
2.20.1 (Apple Git-117)
Amazon Development Center (Romania) S.R.L. registered office: 27A Sf. Lazar
Street, UBC5, floor 2, Iasi, Iasi County, 700045, Romania. Registered in
Romania. Registration number J22/2621/2005.
