From: Joshua Rogers <MegaManSec@users.noreply.github.com>
Date: Sat, 11 Oct 2025 12:23:30 +0000 (+0800)
Subject: asn_mime: Harden strip_end() against empty strings
X-Git-Tag: 4.0-PRE-CLANG-FORMAT-WEBKIT~189
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=535e0a439a7e636fbc10dfdab3bd8b2486fa0c41;p=thirdparty%2Fopenssl.git

asn_mime: Harden strip_end() against empty strings

Signed-off-by: Joshua Rogers <MegaManSec@users.noreply.github.com>

Reviewed-by: Saša Nedvědický <sashan@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/28881)
---

diff --git a/crypto/asn1/asn_mime.c b/crypto/asn1/asn_mime.c
index b85f734e667..c2aceffc1cf 100644
--- a/crypto/asn1/asn_mime.c
+++ b/crypto/asn1/asn_mime.c
@@ -877,7 +877,7 @@ static char *strip_start(char *name)
 static char *strip_end(char *name)
 {
     char *p, c;
-    if (!name)
+    if (!name || *name == '\0')
         return NULL;
     /* Look for first non whitespace or quote */
     for (p = name + strlen(name) - 1; p >= name; p--) {