From: Jan Janssen <medhefgo@web.de>
Date: Sun, 15 Oct 2023 09:43:59 +0000 (+0200)
Subject: fuzz: Add fuzzer for efi conf/osrel parsing
X-Git-Tag: v255-rc1~238
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e9e40862de6af4650f1ef1de022e9940df1f5d9a;p=thirdparty%2Fsystemd.git

fuzz: Add fuzzer for efi conf/osrel parsing
---

diff --git a/src/boot/efi/fuzz-efi-osrel.c b/src/boot/efi/fuzz-efi-osrel.c
new file mode 100644
index 00000000000..900e65bd3c2
--- /dev/null
+++ b/src/boot/efi/fuzz-efi-osrel.c
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+
+#include "alloc-util.h"
+#include "efi-string.h"
+#include "fuzz.h"
+
+#define SEP_LEN 4
+
+int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+        if (outside_size_range(size, SEP_LEN + 1, 64 * 1024))
+                return 0;
+        if (data[SEP_LEN] != '\0')
+                return 0;
+
+        _cleanup_free_ char *p = memdup_suffix0(data + SEP_LEN + 1, size - SEP_LEN - 1);
+        assert_se(p);
+
+        size_t pos = 0;
+        char *key, *value;
+        while (line_get_key_value(p, (const char *) data, &pos, &key, &value)) {
+                assert_se(key);
+                assert_se(value);
+        }
+
+        return 0;
+}
diff --git a/src/boot/efi/meson.build b/src/boot/efi/meson.build
index d5c10258044..c95132e4207 100644
--- a/src/boot/efi/meson.build
+++ b/src/boot/efi/meson.build
@@ -41,6 +41,9 @@ executables += [
         efi_fuzz_template + {
                 'sources' : files('fuzz-efi-string.c'),
         },
+        efi_fuzz_template + {
+                'sources' : files('fuzz-efi-osrel.c'),
+        },
         efi_fuzz_template + {
                 'sources' : files('fuzz-efi-printf.c'),
         },