From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3EAB4348862; Tue, 16 Dec 2025 11:38:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765885138; cv=none; b=kq6pa6c9cKdDqYjONuJkAc9gdp7hNVZ9dSn5+Q5pkBrnO8lcbT36gGEJPb2mgqk45h28elT8dhNReBAMymMv4Mv7ohszUMJAasBXZcNMgEQnlbooACwGlGEkjk8sc0QFMA7Fjq4kqSv/+sqfmRctN6CwQbqDpBcLve6yvP+m63w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765885138; c=relaxed/simple; bh=/Kjk4TLMsfyVzcOvsUoD4XI+GgVouy4cyEn+M73BAeo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=QvYOQJT3xZn4aqTWFKuciYcKmf9p5sGYnlK0qHgCh5CV8ArtncPCalXrD3khicajhvkU+u9YbZtMrX8f6TLfrW3A0Mc9hCtv4XnGX+x2Ew3HPcAk8JUJucQAEVCxAFbEeGKdjVK7qXJx0sFl68lm3J7aBjnhMijAnhem6vFsyuk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AJkMq023; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="AJkMq023" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A40AFC4CEF5; Tue, 16 Dec 2025 11:38:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1765885138; bh=/Kjk4TLMsfyVzcOvsUoD4XI+GgVouy4cyEn+M73BAeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AJkMq023d/LkWIC6Y5imdsyayC2eu45Rsx+UXA58/W7+uHv3rL9yDSl9nFvxYZy7o mQlL2iDj3C5Tx68WRn04fL3uQjHBa7ynHEUxSimCjBPhvagBr96xzyG+0SMz3TLTrc JOllt5tJpSWze9CKlE4dXdyvOogKVyCNzI4WlknU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+332bd4e9d148f11a87dc@syzkaller.appspotmail.com, Sidharth Seela , Konstantin Komarov , Sasha Levin Subject: [PATCH 6.17 049/507] ntfs3: Fix uninit buffer allocated by __getname() Date: Tue, 16 Dec 2025 12:08:10 +0100 Message-ID: <20251216111347.320635789@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251216111345.522190956@linuxfoundation.org> References: <20251216111345.522190956@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sidharth Seela [ Upstream commit 9948dcb2f7b5a1bf8e8710eafaf6016e00be3ad6 ] 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 Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin --- fs/ntfs3/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/ntfs3/inode.c b/fs/ntfs3/inode.c index b08b009121653..cf7e869fdc40c 100644 --- a/fs/ntfs3/inode.c +++ b/fs/ntfs3/inode.c @@ -1717,6 +1717,7 @@ 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); -- 2.51.0