cve/2023/CVE-2023-52462.md

CVE-2023-52462

Description

In the Linux kernel, the following vulnerability has been resolved:bpf: fix check for attempt to corrupt spilled pointerWhen register is spilled onto a stack as a 1/2/4-byte register, we setslot_type[BPF_REG_SIZE - 1] (plus potentially few more below it,depending on actual spill size). So to check if some stack slot hasspilled register we need to consult slot_type[7], not slot_type[0].To avoid the need to remember and double-check this in the future, justuse is_spilled_reg() helper.

POC

Reference

No PoCs from references.

Github

• https://github.com/fkie-cad/nvd-json-data-feeds