Merge pull request #11975 from keszybz/fuzzer-fixes-n

Fixes for a few fuzzer issues

src/fuzz/fuzz-env-file.c

@@ -12,7 +12,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         _cleanup_fclose_ FILE *f = NULL;
         _cleanup_strv_free_ char **rl = NULL, **rlp =  NULL;
 
-        if (size == 0)
+        if (size == 0 || size > 65535)
                 return 0;
 
         f = fmemopen((char*) data, size, "re");

src/fuzz/fuzz-env-file.options

@@ -0,0 +1,2 @@
+[libfuzzer]
+max_len = 65535

src/network/fuzz-network-parser.c

@@ -11,6 +11,9 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         _cleanup_fclose_ FILE *f = NULL;
         _cleanup_(unlink_tempfilep) char network_config[] = "/tmp/fuzz-networkd.XXXXXX";
 
+        if (size > 65535)
+                return 0;
+
         if (!getenv("SYSTEMD_LOG_LEVEL"))
                 log_set_max_level(LOG_CRIT);
 

src/network/fuzz-network-parser.options

@@ -0,0 +1,2 @@
+[libfuzzer]
+max_len = 65535

src/udev/net/fuzz-link-parser.c

@@ -11,6 +11,9 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
         _cleanup_(unlink_tempfilep) char filename[] = "/tmp/fuzz-link-config.XXXXXX";
         _cleanup_fclose_ FILE *f = NULL;
 
+        if (size > 65535)
+                return 0;
+
         if (!getenv("SYSTEMD_LOG_LEVEL"))
                 log_set_max_level(LOG_CRIT);
 

src/udev/net/fuzz-link-parser.options

@@ -0,0 +1,2 @@
+[libfuzzer]
+max_len = 65535