Unverified Commit fa1d2503 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!11723 v2 Squashfs: sanity check symbolic link size 

Merge Pull Request from: @ci-robot 
 
PR sync from: Yifan Qiao <qiaoyifan4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/PF7CJWCT7QXWNIMPOTXOEYNNHJVUWO6B/ 
 
https://gitee.com/src-openeuler/kernel/issues/IARYAF 
 
Link:https://gitee.com/openeuler/kernel/pulls/11723

 

Reviewed-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
parents b900589c 4c5da318

fs/squashfs/inode.c

+6 −1
Original line number Diff line number Diff line
@@ -279,8 +279,13 @@ int squashfs_read_inode(struct inode *inode, long long ino) 
		if (err < 0)

			goto failed_read;



		set_nlink(inode, le32_to_cpu(sqsh_ino->nlink));

		inode->i_size = le32_to_cpu(sqsh_ino->symlink_size);

		if (inode->i_size > PAGE_SIZE) {

			ERROR("Corrupted symlink\n");

			return -EINVAL;

		}



		set_nlink(inode, le32_to_cpu(sqsh_ino->nlink));

		inode->i_op = &squashfs_symlink_inode_ops;

		inode_nohighmem(inode);

		inode->i_data.a_ops = &squashfs_symlink_aops;