CVE-2020-27194 Integer overflow in n/a

What is CVE-2020-27194?

CVE-2020-27194 is a medium-severity vulnerability in Linux kernel, published on 16 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-681

Which versions are affected by CVE-2020-27194?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2020-27194?

Apply the vendor's patch.

Is CVE-2020-27194 being exploited?

There is no known exploitation of CVE-2020-27194 in the wild and no public exploit code.

Public exploit code: 3 proofs of concept on GitHub.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-27194, GHSA-r8fj-347g-p44m, UBUNTU-CVE-2020-27194.