From df0be10c970a8a74ccd3f0825f9eb219632c7d84 Mon Sep 17 00:00:00 2001
From: aled-ua <bugbuster.cc@gmail.com>
Date: Sun, 22 Dec 2024 06:39:47 +0000
Subject: [PATCH] Fix vuln OSV-2024-163

---
 src/mat73.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/mat73.c b/src/mat73.c
index 8237546e..1896e8eb 100644
--- a/src/mat73.c
+++ b/src/mat73.c
@@ -845,6 +845,10 @@ Mat_H5ReadGroupInfo(mat_t *mat, matvar_t *matvar, hid_t dset_id)
         return err;
     }
 
+    if (nfields == 0) {
+        return MATIO_E_GENERIC_READ_ERROR;
+    }
+
     /* Check if the variable is sparse */
     if ( H5Aexists_by_name(dset_id, ".", "MATLAB_sparse", H5P_DEFAULT) ) {
         herr_t herr;