linux-kernel - [PATCH -next v3 0/2] jffs2: fix two memory leak when mount jffs2

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: <20220114102854.3399585-1-libaokun1@huawei.com>
Date:   Fri, 14 Jan 2022 18:28:52 +0800
From:   Baokun Li <libaokun1@...wei.com>
To:     <richard@....at>, <dwmw2@...radead.org>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC:     <libaokun1@...wei.com>, <yukuai3@...wei.com>
Subject: [PATCH -next v3 0/2] jffs2: fix two memory leak when mount jffs2

V1->V2:
	In jffs2_scan_medium,
	if s = kzalloc(sizeof(struct jffs2_summary), GFP_KERNEL);
	returns error, go to "out" to do clear. Null pointer dereference
	occurs when if (s->sum_list_head) is executed in "out".

V2->V3:
	Sorry for the noise, but there seems to be a more elegant way to
	fix the memory leak in jffs2_scan_medium. When memory allocation
	fails or CONFIG_JFFS2_SUMMARY is N, s is NULL.For the former case,
	add the new tag "out_buf" to avoid it.In the latter case,
	jffs2_sum_reset_collected is also an empty function and does nothing.

Baokun Li (2):
  jffs2: fix memory leak in jffs2_do_mount_fs
  jffs2: fix memory leak in jffs2_scan_medium

 fs/jffs2/build.c | 4 +++-
 fs/jffs2/scan.c  | 6 ++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

-- 
2.31.1