From: Tim Kientzle <kientzle@acm.org>
Date: Sat, 16 May 2026 17:04:38 +0000 (-0700)
Subject: Fix unchecked strdup result in __archive_write_program_allocate
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb231e2b39b96efd815ea260de78558eb09b9841;p=thirdparty%2Flibarchive.git

Fix unchecked strdup result in __archive_write_program_allocate

If strdup fails, program_name would be NULL and later use could crash.
Free data and return NULL on allocation failure.
---

diff --git a/libarchive/archive_write_add_filter_program.c b/libarchive/archive_write_add_filter_program.c
index f12db3373..cb92dc04f 100644
--- a/libarchive/archive_write_add_filter_program.c
+++ b/libarchive/archive_write_add_filter_program.c
@@ -184,6 +184,10 @@ __archive_write_program_allocate(const char *program)
 	data->child_stdin = -1;
 	data->child_stdout = -1;
 	data->program_name = strdup(program);
+	if (data->program_name == NULL) {
+		free(data);
+		return (NULL);
+	}
 	return (data);
 }