netdev - [PATCH] iplink: Fix descriptor leak in get_link

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240207210450.14652-1-maks.mishinFZ@gmail.com>
Date: Thu,  8 Feb 2024 00:04:50 +0300
From: Maks Mishin <maks.mishinfz@...il.com>
To: Stephen Hemminger <stephen@...workplumber.org>
Cc: Maks Mishin <maks.mishinFZ@...il.com>,
	netdev@...r.kernel.org
Subject: [PATCH] iplink: Fix descriptor leak in get_link_kind()

Found by RASU JSC

Signed-off-by: Maks Mishin <maks.mishinFZ@...il.com>
---
 ip/iplink.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ip/iplink.c b/ip/iplink.c
index 95314af5..7e31b95c 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -168,6 +168,9 @@ struct link_util *get_link_kind(const char *id)
 
 	snprintf(buf, sizeof(buf), "%s_link_util", id);
 	l = dlsym(dlh, buf);
+	if (dlh != NULL)
+		dlclose(dlh);
+
 	if (l == NULL)
 		return NULL;
 
-- 
2.30.2