CVE-2020-27170

MediumCVSS 4.7/10Last modified Oct 8, 2026

Description

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic, leading to side-channel attacks that defeat Spectre mitigations and obtain sensitive information from kernel memory, aka CID-f232326f6966. This affects pointer types that do not define a ptr_limit.

Metrics

CVSS 3.1 4.7/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-203

Affected software

No affected versions have been published.

Timeline

Published: Mar 20, 2021
Last modified: Oct 8, 2026
NVD status: Modified

Related CVEs from 2020

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