In the Linux kernel, the following vulnerability has been resolved: bcache: fix variable length array abuse in btree_iter btree_iter is used in two ways: either allocated on the stack with a fixed size MAX_BSETS, or from a mempool with a dynamic size based on the specific cache set. Previously, the struct had a fixed-length array of size MAX_BSETS which was indexed out-of-bounds for the dynamically-sized iterators, which causes UBSAN to complain. This patch uses the same approach as in bcachefs's sort_iter and splits the iterator into a btree_iter with a flexible array member and a btree_iter_stack which embeds a btree_iter as well as a fixed-length data array.
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
| Link | Tags |
|---|---|
| https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b | patch mailing list |
| https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023 | patch mailing list |
| https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02 | patch mailing list |
| https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148 | patch mailing list |
| https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671 | patch mailing list |
| https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 | patch mailing list |