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Change History

In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix uninitialized pointer free in add_inode_ref()

The add_inode_ref() function does not initialize the "name" struct when
it is declared.  If any of the following calls to "read_one_inode()
returns NULL,

	dir = read_one_inode(root, parent_objectid);
	if (!dir) {
		ret = -ENOENT;
		goto out;
	}

	inode = read_one_inode(root, inode_objectid);
	if (!inode) {
		ret = -EIO;
		goto out;
	}

then "name.name" would be freed on

kernel.org https://git.kernel.org/stable/c/12cf028381aa19bc38465341512c280256e8d82d [No types assigned]

kernel.org https://git.kernel.org/stable/c/66691c6e2f18d2aa4b22ffb624b9bdc97e9979e4 [No types assigned]

kernel.org https://git.kernel.org/stable/c/a941f3d5b1469c60a7e70e775584f110b47e0d16 [No types assigned]

kernel.org https://git.kernel.org/stable/c/e11ce03b58743bf1e096c48fcaa7e6f08eb75dfa [No types assigned]