From e9e40862de6af4650f1ef1de022e9940df1f5d9a Mon Sep 17 00:00:00 2001 From: Jan Janssen Date: Sun, 15 Oct 2023 11:43:59 +0200 Subject: [PATCH] fuzz: Add fuzzer for efi conf/osrel parsing --- src/boot/efi/fuzz-efi-osrel.c | 26 ++++++++++++++++++++++++++ src/boot/efi/meson.build | 3 +++ 2 files changed, 29 insertions(+) create mode 100644 src/boot/efi/fuzz-efi-osrel.c 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'), }, -- 2.47.3