sudo/backport-Fix-memory-leak-of-pass-in-converse.patch

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From f5cae905ca1a9f686f80aea45a34cea50fec0534 Mon Sep 17 00:00:00 2001
From: modric <pioneerbtw7@163.com>
Date: Thu, 17 Nov 2022 16:08:59 +0800
Subject: [PATCH] Fix memory leak of pass in converse().
---
plugins/sudoers/auth/pam.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/plugins/sudoers/auth/pam.c b/plugins/sudoers/auth/pam.c
index 339b7a5..f5580ea 100644
--- a/plugins/sudoers/auth/pam.c
+++ b/plugins/sudoers/auth/pam.c
@@ -722,7 +722,8 @@ converse(int num_msg, PAM_CONST struct pam_message **msg,
sudo_debug_printf(SUDO_DEBUG_ERROR|SUDO_DEBUG_LINENO,
"password longer than %d", PAM_MAX_RESP_SIZE);
ret = PAM_CONV_ERR;
- explicit_bzero(pass, strlen(pass));
+ freezero(pass, strlen(pass));
+ pass = NULL;
goto done;
}
reply[n].resp = pass; /* auth_getpass() malloc's a copy */
--
2.27.0