ws2_32: Return WSAENOBUFS from setsockopt() for IPPROTO_IPV6 with negative optlen.

Signed-off-by: Paul Gofman <pgofman@codeweavers.com> Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

ws2_32: Return WSAENOBUFS from setsockopt() for IPPROTO_IPV6 with negative optlen.
ab8b7ed5 · Paul Gofman · Alexandre Julliard · 9ff978e5 · ab8b7ed5
Commit ab8b7ed5 authored Mar 10, 2022 by Paul Gofman Committed by Alexandre Julliard Mar 10, 2022
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socket.c dlls/ws2_32/socket.c +6 -0

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--- a/dlls/ws2_32/socket.c
+++ b/dlls/ws2_32/socket.c
@@ -3149,6 +3149,12 @@ int WINAPI setsockopt( SOCKET s, int level, int optname, const char *optval, int
        break;
    case IPPROTO_IPV6:
+        if (optlen < 0)
+        {
+            SetLastError( WSAENOBUFS );
+            return SOCKET_ERROR;
+        }
        switch(optname)
        {
        case IPV6_ADD_MEMBERSHIP: