floating point exception when packaging weird elf files

This patch is from wjenkner@inode.at in FreeBSD Bugzilla PR 193995: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193995 https://bugs.freebsd.org/bugzilla/attachment.cgi?id=147750
freebsd · Nov 21, 2017 · 42ff428 · 42ff428
1 parent 49c4fb7
commit 42ff428
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/libpkg/pkg_elf.c b/libpkg/pkg_elf.c
@@ -327,6 +327,10 @@ analyse_elf(struct pkg *pkg, const char *fpath)
 		case SHT_DYNAMIC:
 			dynamic = scn;
 			sh_link = shdr.sh_link;
+			if (shdr.sh_entsize == 0) {
+				ret = EPKG_END;
+				goto cleanup;
+			}
 			numdyn = shdr.sh_size / shdr.sh_entsize;
 			break;
 		}