Merge pull request #2839 from rouault/fix_ossfuzz_31964

pj_obj_create(): avoid passing invalid ellipsoid parameters ot pj_calc_ellipsoid_params()

1 files changed, 26 insertions, 0 deletions

diff --git a/test/unit/test_c_api.cpp b/test/unit/test_c_api.cpp
index 44dceb97..721c54d5 100644
--- a/test/unit/test_c_api.cpp
+++ b/test/unit/test_c_api.cpp
@@ -346,6 +346,32 @@ TEST_F(CApi, proj_create_from_wkt) {
         ObjectKeeper keeper(obj);
         EXPECT_NE(obj, nullptr);
     }
+    {
+        // Invalid ellipsoidal parameter (semi major axis)
+        auto obj = proj_create_from_wkt(
+            m_ctxt,
+            "GEOGCS[\"test\",\n"
+            "    DATUM[\"test\",\n"
+            "        SPHEROID[\"test\",0,298.257223563,\"unused\"]],\n"
+            "    PRIMEM[\"Greenwich\",0],\n"
+            "    UNIT[\"degree\",0.0174532925199433]]",
+            nullptr, nullptr, nullptr);
+        ObjectKeeper keeper(obj);
+        EXPECT_EQ(obj, nullptr);
+    }
+    {
+        // Invalid ellipsoidal parameter (inverse flattening)
+        auto obj = proj_create_from_wkt(
+            m_ctxt,
+            "GEOGCS[\"test\",\n"
+            "    DATUM[\"test\",\n"
+            "        SPHEROID[\"test\",6378137,-1,\"unused\"]],\n"
+            "    PRIMEM[\"Greenwich\",0],\n"
+            "    UNIT[\"degree\",0.0174532925199433]]",
+            nullptr, nullptr, nullptr);
+        ObjectKeeper keeper(obj);
+        EXPECT_EQ(obj, nullptr);
+    }
 }
 
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