--- a/libkmod/libkmod-config.c
+++ b/libkmod/libkmod-config.c
@@ -21,6 +21,7 @@
 #include <ctype.h>
 #include <dirent.h>
 #include <errno.h>
+#include <libgen.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -794,7 +795,9 @@ static int conf_files_insert_sorted(stru
 	bool is_single = false;
 
 	if (name == NULL) {
-		name = basename(path);
+		char *pathc = strdup(path);
+		name = basename(pathc);
+		free(pathc);
 		is_single = true;
 	}
 
--- a/shared/util.c
+++ b/shared/util.c
@@ -22,6 +22,7 @@
 #include <assert.h>
 #include <ctype.h>
 #include <errno.h>
+#include <libgen.h>
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdio.h>
@@ -173,8 +174,10 @@ char *modname_normalize(const char *modn
 char *path_to_modname(const char *path, char buf[static PATH_MAX], size_t *len)
 {
 	char *modname;
+	char *pathc = strdup(path);
 
-	modname = basename(path);
+	modname = basename(pathc);
+	free(pathc);
 	if (modname == NULL || modname[0] == '\0')
 		return NULL;
 
--- a/tools/depmod.c
+++ b/tools/depmod.c
@@ -22,6 +22,7 @@
 #include <dirent.h>
 #include <errno.h>
 #include <getopt.h>
+#include <libgen.h>
 #include <limits.h>
 #include <regex.h>
 #include <stdio.h>
@@ -757,14 +758,17 @@ static int cfg_files_insert_sorted(struc
 	struct cfg_file **files, *f;
 	size_t i, n_files, namelen, dirlen;
 	void *tmp;
+	char *dirc;
 
 	dirlen = strlen(dir);
 	if (name != NULL)
 		namelen = strlen(name);
 	else {
-		name = basename(dir);
+		dirc = strdup(dir);
+		name = basename(dirc);
 		namelen = strlen(name);
 		dirlen -= namelen + 1;
+		free(dirc);
 	}
 
 	n_files = *p_n_files;
@@ -2613,7 +2617,7 @@ static int depmod_output(struct depmod *
 			int mode = 0644;
 			int fd;
 
-			snprintf(tmp, sizeof(tmp), "%s.%i.%li.%li", itr->name, getpid(),
+			snprintf(tmp, sizeof(tmp), "%s.%i.%" PRId64 ".%" PRId64, itr->name, getpid(),
 					tv.tv_usec, tv.tv_sec);
 			fd = openat(dfd, tmp, flags, mode);
 			if (fd < 0) {
--- a/tools/kmod.c
+++ b/tools/kmod.c
@@ -22,6 +22,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <libgen.h>
 
 #include <shared/util.h>