cve/2024/CVE-2024-50262.md

### [CVE-2024-50262](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50262)
![](https://img.shields.io/static/v1?label=Product&message=Linux&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=4.16%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=b471f2f1de8b816f1e799b80aa92588f3566e4bd%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=blue)

### Description

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 hasfull paths from the root to leaves. For example, consider a trie withmax_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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/w4zu/Debian_security