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 76629C2E0; Mon, 23 Jun 2025 21:31:56 +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=1750714316; cv=none; b=Kso43NIUTg2Qq1dCxqKVmRt6Ys0HG4DN78y9IwkkH7JUv+15nO8//QcS01HnmI+vNJQh2UTm7KiOr4A6vmyNj/pqZ0vFBLvD3Pv3HBX2t5ZVokrrdNAHmmziAiwtkz+gCwOn7BsCz7ySXDwazDI51HqYax2o1Gf1wcm3mVhM220= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750714316; c=relaxed/simple; bh=Na1C4K6MP38UGtChRgsaIFfOnJxWG5rMyAuy0thpn2c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eeRqf8v04UU6fMJbXBfgwDMD8ECSmUFQDCX+r2CfyJlA+eWoO5eRd/TZTDmVzufGm2JcoxuIamThoWQ4Zb2cN9Ez0exrkSaYuhDZRf9m44IOD9kjj9KhK6nPFiwpFDzAoAo1ks3zlmxTtdW3TcDoSdjCtTmD1PCBhgiw/haalHo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Tvy51gZU; 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="Tvy51gZU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C34BC4CEEA; Mon, 23 Jun 2025 21:31:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750714316; bh=Na1C4K6MP38UGtChRgsaIFfOnJxWG5rMyAuy0thpn2c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Tvy51gZUVMJH/Atwrj9JqB2Dv6C/sh9CmQAdpoasQZUtPJ6Xol5gql+E0MHgxOaps tmKap5itPFD2J+BlCrRW0VuLGyESLYkIv15VAYAgVS1VVrEFjXyq1UmY0Bz3WbS1is 3EZUb4OE7Wm0MYQAfmKMgVidv2zd4WRwCoh7npbI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Zhang Yi , Jan Kara , Baokun Li , Theodore Tso , stable@kernel.org Subject: [PATCH 6.12 095/414] ext4: ensure i_size is smaller than maxbytes Date: Mon, 23 Jun 2025 15:03:52 +0200 Message-ID: <20250623130644.468288773@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130642.015559452@linuxfoundation.org> References: <20250623130642.015559452@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Zhang Yi commit 1a77a028a392fab66dd637cdfac3f888450d00af upstream. The inode i_size cannot be larger than maxbytes, check it while loading inode from the disk. Signed-off-by: Zhang Yi Reviewed-by: Jan Kara Reviewed-by: Baokun Li Link: https://patch.msgid.link/20250506012009.3896990-4-yi.zhang@huaweicloud.com Signed-off-by: Theodore Ts'o Cc: stable@kernel.org Signed-off-by: Greg Kroah-Hartman --- fs/ext4/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4928,7 +4928,8 @@ struct inode *__ext4_iget(struct super_b ei->i_file_acl |= ((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32; inode->i_size = ext4_isize(sb, raw_inode); - if ((size = i_size_read(inode)) < 0) { + size = i_size_read(inode); + if (size < 0 || size > ext4_get_maxbytes(inode)) { ext4_error_inode(inode, function, line, 0, "iget: bad i_size value: %lld", size); ret = -EFSCORRUPTED;