High · published November 9, 2024
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix out-of-bounds write in trie_get_next_key()
trie_get_next_key() allocates a node stack with size trie->max_prefixlen,
while it writes (trie->max_prefixlen + 1) nodes to the stack when it has
full paths from the root to leaves. For example, consider a trie with
max_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...
0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with
.prefixlen = 8 make 9 nodes be written on the node stack with size 8.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.16, < 4.19.323 | 4.19.323 |
| linux/linux_kernel | ≥ 4.20, < 5.4.285 | 5.4.285 |
| linux/linux_kernel | ≥ 5.5, < 5.10.229 | 5.10.229 |
| linux/linux_kernel | ≥ 5.11, < 5.15.171 | 5.15.171 |
| linux/linux_kernel | ≥ 5.16, < 6.1.116 | 6.1.116 |
| linux/linux_kernel | ≥ 6.2, < 6.6.60 | 6.6.60 |
| linux/linux_kernel | ≥ 6.7, < 6.11.7 | 6.11.7 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |