From: bugzilla-daemon@bugzilla.kernel.org
To: linux-f2fs-devel@lists.sourceforge.net
Subject: [Bug 200773] An issue was discovered in the Linux kernel through 4.17.3. There is a NULL pointer dereference in get_checkpoint_version() in fs/f2fs/checkpoint.c when mounting crafted f2fs image.
Date: Thu, 09 Aug 2018 09:03:36 +0000 [thread overview]
Message-ID: <bug-200773-202145-ZQz5901zov@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-200773-202145@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=200773
--- Comment #1 from Shuaibing Lu (datadancer@163.com) ---
-Location
https://elixir.bootlin.com/linux/v4.17.1/source/fs/f2fs/checkpoint.c#L741
*cp_page = get_meta_page(sbi, cp_addr);
*cp_block = (struct f2fs_checkpoint *)page_address(*cp_page);
Here cp_page may be NULL, and thus NULL pointer dereference triggered.
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next prev parent reply other threads:[~2018-08-09 9:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 8:33 [Bug 200773] New: An issue was discovered in the Linux kernel through 4.17.3. There is a NULL pointer dereference in get_checkpoint_version() in fs/f2fs/checkpoint.c when mounting crafted f2fs image bugzilla-daemon
2018-08-09 9:03 ` bugzilla-daemon [this message]
2018-08-09 15:19 ` [Bug 200773] " bugzilla-daemon
2018-09-21 1:44 ` bugzilla-daemon
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