CVE-2020-27170

CVE Details

Release Date:2021-03-20

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.

See more information about CVE-2020-27170 from MITRE CVE dictionary and NIST NVD


CVSS v3.0 metrics


NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 4.7 Base Metrics: AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Access Vector: Local network Attack Complexity: High
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: None Availability Impact: None

Errata information


PlatformErrataRelease Date
Oracle Linux version 7 (kernel)ELSA-2021-23142021-06-10
Oracle Linux version 7 (kernel-uek)ELSA-2021-91402021-03-31
Oracle Linux version 7 (kernel-uek)ELSA-2021-92222021-05-10
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-91412021-03-31
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-92232021-05-10
Oracle Linux version 8 (kernel-uek)ELSA-2021-91402021-03-31
Oracle Linux version 8 (kernel-uek-container)ELSA-2021-91412021-03-31



This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team

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