What’s Vulnerable › Vulnerabilities

CVE-2020-27194

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-16 · updated 2026-06-17
• Weakness: CWE-681

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.

Affected products

• Linux kernel: before 5.8.15 — fixed in 5.8.15

How to fix

Upgrade to a fixed version: Linux kernel 5.8.15. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.15
• https://github.com/torvalds/linux/commit/5b9fbeb75b6a98955f628e205ac26689bcb1383e
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.15
• https://github.com/torvalds/linux/commit/5b9fbeb75b6a98955f628e205ac26689bcb1383e

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