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 <andraprs@amazon.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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;