X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=elf%2Fsoname.c;h=72d465ade86ba66398fd209251b80e9ad7055151;hb=6529b32d6c90e00f79b311239d24fd2bfdd73560;hp=aa683a53acb3bf726218dc37af3c44e51a396c1a;hpb=196432d527f7aeba618b97e4da7cc631b78fd71f;p=zpackage

diff --git a/elf/soname.c b/elf/soname.c
index aa683a5..72d465a 100644
--- a/elf/soname.c
+++ b/elf/soname.c
@@ -36,9 +36,14 @@ int main(int ac, char **av) {
 	if (fstat(elffd, &sbuf) == -1) {
 		exit(1);
 	}
+	/* not a regular file? */
 	if (!S_ISREG(sbuf.st_mode)) {
 		exit(1);
 	}
+	/* not at least the size of the elf header? */
+	if (sbuf.st_size < sizeof(Elf64_Ehdr)) {
+		exit(1);
+	}
 
 	elfbase = mmap(0, sbuf.st_size, PROT_READ,MAP_PRIVATE, elffd, 0);
 	if (!elfbase) {