An issue was discovered in the Linux kernel before 5.8.15. scalar32_min_max_or in kernel/bpf/verifier.c mishandles bounds tracking during use of 64-bit values, aka CID-5b9fbeb75b6a.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27194
Reference (s):
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.15
- https://github.com/torvalds/linux/commit/5b9fbeb75b6a98955f628e205ac26689bcb1383e