linux-ext4 - [PATCH 03/12] zap_sector: fix memory leak

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

Message-ID: <8ea5c607-54cc-ccaf-3e4b-ee2af0160a0b@huawei.com>
Date:   Mon, 24 May 2021 19:20:54 +0800
From:   Wu Guanghao <wuguanghao3@...wei.com>
To:     <linux-ext4@...r.kernel.org>
CC:     <liuzhiqiang26@...wei.com>, <linfeilong@...wei.com>
Subject: [PATCH 03/12] zap_sector: fix memory leak

In zap_sector(), need free buf before return,
otherwise it will cause memory leak.

Signed-off-by: Wu Guanghao <wuguanghao3@...wei.com>
Signed-off-by: Zhiqiang Liu <liuzhiqiang26@...wei.com>
Reviewed-by: Wu Bo <wubo40@...wei.com>
---
 misc/mke2fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index afbcf486..94f81da9 100644
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -586,6 +586,7 @@ static void zap_sector(ext2_filsys fs, int sect, int nsect)
 			magic = (unsigned int *) (buf + BSD_LABEL_OFFSET);
 			if ((*magic == BSD_DISKMAGIC) ||
 				(*magic == BSD_MAGICDISK))
+				free(buf);
 				return;
 		}
 	}
--