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| author | Junio C Hamano <gitster@pobox.com> | 2023-06-21 00:53:12 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2023-06-21 00:53:13 +0200 |
| commit | 9cd234e6465ab2bea5c402f0d9ee1495501250ef (patch) | |
| tree | a49e3100d91ff919f5ff7bfdcf9c665dcc6408a2 /builtin/submodule--helper.c | |
| parent | Merge branch 'jc/test-modernization-2' (diff) | |
| parent | builtin/submodule--helper.c: handle missing submodule URLs (diff) | |
| download | git-9cd234e6465ab2bea5c402f0d9ee1495501250ef.tar.xz git-9cd234e6465ab2bea5c402f0d9ee1495501250ef.zip | |
Merge branch 'tb/submodule-null-deref-fix'
"git submodule" code trusted the data coming from the config (and
the in-tree .gitmodules file) too much without validating, leading
to NULL dereference if the user mucks with a repository (e.g.
submodule.<name>.url is removed). This has been corrected.
* tb/submodule-null-deref-fix:
builtin/submodule--helper.c: handle missing submodule URLs
Diffstat (limited to 'builtin/submodule--helper.c')
| -rw-r--r-- | builtin/submodule--helper.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c index 6bf8d666ce..6a16208e8a 100644 --- a/builtin/submodule--helper.c +++ b/builtin/submodule--helper.c @@ -2024,14 +2024,17 @@ static int prepare_to_clone_next_submodule(const struct cache_entry *ce, strbuf_reset(&sb); strbuf_addf(&sb, "submodule.%s.url", sub->name); if (repo_config_get_string_tmp(the_repository, sb.buf, &url)) { - if (starts_with_dot_slash(sub->url) || - starts_with_dot_dot_slash(sub->url)) { + if (sub->url && (starts_with_dot_slash(sub->url) || + starts_with_dot_dot_slash(sub->url))) { url = resolve_relative_url(sub->url, NULL, 0); need_free_url = 1; } else url = sub->url; } + if (!url) + die(_("cannot clone submodule '%s' without a URL"), sub->name); + strbuf_reset(&sb); strbuf_addf(&sb, "%s/.git", ce->name); needs_cloning = !file_exists(sb.buf); |