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.
Published: 2021-03-20
Score: 4.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2610-1 linux-4.19 security update
EUVD EUVD EUVD-2020-19694 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.
Ubuntu USN Ubuntu USN USN-4887-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4890-1 Linux kernel vulnerabilities
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Canonical Ubuntu Linux
Debian Debian Linux
Fedoraproject Fedora
Linux Linux Kernel
Redhat Enterprise Linux Rhel Extras Rt
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T16:11:35.904Z

Reserved: 2020-10-16T00:00:00.000Z

Link: CVE-2020-27170

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-03-20T22:15:11.940

Modified: 2024-11-21T05:20:48.580

Link: CVE-2020-27170

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-03-19T00:00:00Z

Links: CVE-2020-27170 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses