CVE-2021-29155

CVE Details

Release Date:2021-04-20

Description


An issue was discovered in the Linux kernel through 5.11.x. 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. Specifically, for sequences of pointer arithmetic operations, the pointer modification performed by the first operation is not correctly accounted for when restricting subsequent operations.

See more information about CVE-2021-29155 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: 5.5 Base Metrics: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Access Vector: Local network Attack Complexity: Low
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-uek)ELSA-2021-93622021-07-16
Oracle Linux version 7 (kernel-uek-container)ELSA-2021-93632021-07-16
Oracle Linux version 8 (kernel)ELSA-2021-43562021-11-16
Oracle Linux version 8 (kernel-uek)ELSA-2021-93622021-07-16
Oracle Linux version 8 (kernel-uek-container)ELSA-2021-93632021-07-16



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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