High · published September 7, 2025
In the Linux kernel, the following vulnerability has been resolved:
mm: swap: fix potential buffer overflow in setup_clusters()
In setup_swap_map(), we only ensure badpages are in range (0, last_page].
As maxpages might be < last_page, setup_clusters() will encounter a buffer
overflow when a badpage is >= maxpages.
Only call inc_cluster_info_page() for badpage which is < maxpages to fix
the issue.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 6.12, < 6.12.42 | 6.12.42 |
| linux/linux_kernel | ≥ 6.13, < 6.15.10 | 6.15.10 |
| linux/linux_kernel | ≥ 6.16, < 6.16.1 | 6.16.1 |