CVE-2024-50262: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 4.16, before 4.19.323 (fixed in 4.19.323); from 4.20, before 5.4.285 (fixed in 5.4.285); from 5.5, before 5.10.229 (fixed in 5.10.229); from 5.11, before 5.15.171 (fixed in 5.15.171); from 5.16, before 6.1.116 (fixed in 6.1.116); from 6.2, before 6.6.60 (fixed in 6.6.60); …

Published 2024-11-09. Last modified 2026-06-17.