From: gaoyi <ymuemc@163.com>
Date: Sun, 12 Jul 2020 07:24:42 +0000 (-0400)
Subject: udev: specify the end of value
X-Git-Tag: v246-rc2~87^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1e67a9c2cd6065b850d2fd5e376d8b9bff63bdbc;p=thirdparty%2Fsystemd.git

udev: specify the end of value

NULSTR_FOREACH may read the illegal match

Signed-off-by: gaoyi <ymuemc@163.com>
---

diff --git a/src/udev/udev-rules.c b/src/udev/udev-rules.c
index 4efafffd408..2d4eb3d3414 100644
--- a/src/udev/udev-rules.c
+++ b/src/udev/udev-rules.c
@@ -452,6 +452,11 @@ static int rule_line_add_token(UdevRuleLine *rule_line, UdevRuleTokenType type,
                                 }
                         }
                         *b = '\0';
+
+                        /* Make sure the value is end, so NULSTR_FOREACH can read correct match */
+                        if (b < a)
+                                b[1] = '\0';
+
                         if (bar)
                                 empty = true;