unarchive: fix possible segmentation fault in deb_extract()

[oweals/opkg-lede.git] / libbb / unarchive.c

diff --git a/libbb/unarchive.c b/libbb/unarchive.c
index 08f50bf6f1f56717e9dcff75ab0adb4f7916181f..6edb5b673bd4a484ee2fddbb6f15f3da28a7a3c0 100644 (file)
--- a/libbb/unarchive.c
+++ b/libbb/unarchive.c
@@ -529,7 +529,7 @@ char *deb_extract(const char *package_filename, FILE * out_stream,
        char *ared_file = NULL;
        char ar_magic[8];
        int gz_err;
-       struct gzip_handle tar_outer, tar_inner;
+       struct gzip_handle tar_outer = { }, tar_inner = { };
        file_header_t *tar_header;
        ssize_t len;
 
@@ -561,7 +561,6 @@ char *deb_extract(const char *package_filename, FILE * out_stream,
        /* set the buffer size */
        setvbuf(deb_stream, NULL, _IOFBF, 0x8000);
 
-       memset(&tar_outer, 0, sizeof(tar_outer));
        tar_outer.file = deb_stream;
        gzip_exec(&tar_outer, NULL);
 
@@ -572,7 +571,6 @@ char *deb_extract(const char *package_filename, FILE * out_stream,
                        name_offset = 2;
 
                if (strcmp(ared_file, tar_header->name + name_offset) == 0) {
-                       memset(&tar_inner, 0, sizeof(tar_inner));
                        tar_inner.gzip = &tar_outer;
                        gzip_exec(&tar_inner, NULL);