mesa: Fix array out-of-bounds access by _mesa_Lightf.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/mesa/main/light.c b/src/mesa/main/light.c
index c1d47de3305..d4f3bb90265 100644
--- a/src/mesa/main/light.c
+++ b/src/mesa/main/light.c
@@ -206,7 +206,10 @@ _mesa_light(GLcontext *ctx, GLuint lnum, GLenum pname, const GLfloat *params)
 void GLAPIENTRY
 _mesa_Lightf( GLenum light, GLenum pname, GLfloat param )
 {
-   _mesa_Lightfv( light, pname, &param );
+   GLfloat fparam[4];
+   fparam[0] = param;
+   fparam[1] = fparam[2] = fparam[3] = 0.0F;
+   _mesa_Lightfv( light, pname, fparam );
 }