From: Egor Shestakov <egor@ved1.me>
Date: Thu, 5 Feb 2026 08:55:58 +0000 (+0000)
Subject: BUG/MINOR: startup: handle a possible strdup() failure
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2a07dc9c24b8293920fc24ca248e8b2a5c06130d;p=thirdparty%2Fhaproxy.git

BUG/MINOR: startup: handle a possible strdup() failure

Fix unhandled strdup() failure when initializing global.log_tag.

Bug was introduced with the fix UAF for global progname pointer from
351ae5dbe. So it must be backported as far as 3.1.
---

diff --git a/src/haproxy.c b/src/haproxy.c
index 0ae755faa..48186a66a 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -1441,6 +1441,10 @@ static void init_early(int argc, char **argv)
 	}
 
 	chunk_initlen(&global.log_tag, strdup(progname), len, len);
+	if (b_orig(&global.log_tag) == NULL) {
+		ha_alert("Cannot allocate memory for log_tag.\n");
+		exit(EXIT_FAILURE);
+	}
 }
 
 /* handles program arguments. Very minimal parsing is performed, variables are