From 8a0b17e48b83e933960dfeb8fa08b259f03f310e Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Thu, 14 Dec 2017 15:18:38 +0100 Subject: elf: Compute correct array size in _dl_init_paths [BZ #22606] --- elf/dl-load.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'elf') diff --git a/elf/dl-load.c b/elf/dl-load.c index 10d859bd35..5f1f908599 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include @@ -103,7 +104,9 @@ static size_t ncapstr attribute_relro; static size_t max_capstrlen attribute_relro; -/* Get the generated information about the trusted directories. */ +/* Get the generated information about the trusted directories. Use + an array of concatenated strings to avoid relocations. See + gen-trusted-dirs.awk. */ #include "trusted-dirs.h" static const char system_dirs[] = SYSTEM_DIRS; @@ -111,9 +114,7 @@ static const size_t system_dirs_len[] = { SYSTEM_DIRS_LEN }; -#define nsystem_dirs_len \ - (sizeof (system_dirs_len) / sizeof (system_dirs_len[0])) - +#define nsystem_dirs_len array_length (system_dirs_len) static bool is_trusted_path (const char *path, size_t len) @@ -685,9 +686,8 @@ _dl_init_paths (const char *llp) + ncapstr * sizeof (enum r_dir_status)) / sizeof (struct r_search_path_elem)); - rtld_search_dirs.dirs[0] = (struct r_search_path_elem *) - malloc ((sizeof (system_dirs) / sizeof (system_dirs[0])) - * round_size * sizeof (struct r_search_path_elem)); + rtld_search_dirs.dirs[0] = malloc (nsystem_dirs_len * round_size + * sizeof (*rtld_search_dirs.dirs[0])); if (rtld_search_dirs.dirs[0] == NULL) { errstring = N_("cannot create cache for search path"); -- cgit 1.4.1