Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected cafe563591446cf80bfbc2fe3bc72a2e36cf1060 before 2c3d7b03b658dc8bfa6112b194b67b92a87e081b; affected cafe563591446cf80bfbc2fe3bc72a2e36cf1060 before 5a1922adc5798b7ec894cd3f197afb6f9591b023; affected cafe563591446cf80bfbc2fe3bc72a2e36cf1060 before 934e1e4331859183a861f396d7dfaf33cb5afb02; affected cafe563591446cf80bfbc2fe3bc72a2e36cf1060 before 6479b9f41583b013041943c4602e1ad61cec8148; affected cafe563591446cf80bfbc2fe3bc72a2e36cf1060 before 0c31344e22dd8d6b1394c6e4c41d639015bdc671; affected cafe563591446cf80bfbc2fe3bc72a2e36cf1060 before 3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31 |
| Linux / Linux | affected 3.10; unaffected 0 before 3.10; unaffected 5.10.221 through 5.10.*; unaffected 5.15.162 through 5.15.*; unaffected 6.1.94 through 6.1.*; unaffected 6.6.34 through 6.6.*; unaffected 6.9.5 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b
- https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023
- https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02
- https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148
- https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671
- https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.
- https://git.kernel.org/stable/c/2c3d7b03b658dc8bfa6112b194b67b92a87e081b
- https://git.kernel.org/stable/c/5a1922adc5798b7ec894cd3f197afb6f9591b023
- https://git.kernel.org/stable/c/934e1e4331859183a861f396d7dfaf33cb5afb02
- https://git.kernel.org/stable/c/6479b9f41583b013041943c4602e1ad61cec8148
- https://git.kernel.org/stable/c/0c31344e22dd8d6b1394c6e4c41d639015bdc671
- https://git.kernel.org/stable/c/3a861560ccb35f2a4f0a4b8207fa7c2a35fc7f31
No English description supplied.