296,213
Total vulnerabilities in the database
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix softlockup in arena_map_free on 64k page kernel
On an aarch64 kernel with CONFIG_PAGE_SIZE_64KB=y, arena_htab tests cause a segmentation fault and soft lockup. The same failure is not observed with 4k pages on aarch64.
It turns out arena_map_free() is calling apply_to_existing_page_range() with the address returned by bpf_arena_get_kern_vm_start(). If this address is not page-aligned the code ends up calling apply_to_pte_range() with that unaligned address causing soft lockup.
Fix it by round up GUARD_SZ to PAGE_SIZE << 1 so that the division by 2 in bpf_arena_get_kern_vm_start() returns a page-aligned value.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 6.14-rc1 | 6.14-rc1.x |
| linux / linux_kernel | 6.14-rc2 | 6.14-rc2.x |
| linux / linux_kernel | 6.14-rc3 | 6.14-rc3.x |
| linux / linux_kernel | 6.9 | 6.9.x |
| linux / linux_kernel | 6.13 | 6.13.5 |
| linux / linux_kernel | 6.9 | 6.12.17 |