From: Sidharth Seela <sidharthseela@gmail.com>
To: almaz.alexandrovich@paragon-software.com
Cc: ntfs3@lists.linux.dev, linux-kernel@vger.kernel.org,
syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com,
sidharthseela@gmail.com
Subject: [PATCH v1] ntfs3: Fix uninit buffer allocated by __getname()
Date: Tue, 23 Sep 2025 12:10:16 +0530 [thread overview]
Message-ID: <20250923064015.178554-2-sidharthseela@gmail.com> (raw)
Fix uninit errors caused after buffer allocation given to 'de'; by
initializing the buffer with zeroes. The fix was found by using KMSAN.
Reported-by: syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com
Fixes: 78ab59fee07f2 ("fs/ntfs3: Rework file operations")
Signed-off-by: Sidharth Seela <sidharthseela@gmail.com>
--
diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c
index 37cbbee7fa58..6b14c13bda68 100644
--- a/fs/ntfs3/inode.c
+++ b/fs/ntfs3/inode.c
@@ -1716,6 +1716,7 @@ int ntfs_link_inode(struct inode *inode, struct dentry *dentry)
de = __getname();
if (!de)
return -ENOMEM;
+ memset(de, 0, PATH_MAX);
/* Mark rw ntfs as dirty. It will be cleared at umount. */
ntfs_set_state(sbi, NTFS_DIRTY_DIRTY);
--
2.47.3
next reply other threads:[~2025-09-23 6:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-23 6:40 Sidharth Seela [this message]
2025-11-20 8:47 ` [PATCH v1] ntfs3: Fix uninit buffer allocated by __getname() Konstantin Komarov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20250923064015.178554-2-sidharthseela@gmail.com \
--to=sidharthseela@gmail.com \
--cc=almaz.alexandrovich@paragon-software.com \
--cc=linux-kernel@vger.kernel.org \
--cc=ntfs3@lists.linux.dev \
--cc=syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox