Messages in this thread Patch in this message | | | From | Andra Paraschiv <> | Subject | [PATCH net-next v4 3/5] vsock_addr: Check for supported flag values | Date | Mon, 14 Dec 2020 18:11:20 +0200 |
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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> --- 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)
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