<p>There is no fixed version for <code>RHEL:7</code> <code>kernel</code>.</p>

Integer Underflow Affecting kernel package, versions *

Threat Intelligence

0.05% (18^th percentile)

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Snyk ID SNYK-RHEL7-KERNEL-1395627
published 26 Jul 2021
disclosed 19 Mar 2021

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Introduced: 19 Mar 2021

CVE-2020-27171 Open this link in a new tab CWE-191 Open this link in a new tab

How to fix?

There is no fixed version for RHEL:7 kernel.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

An issue was discovered in the Linux kernel before 5.11.8. kernel/bpf/verifier.c has an off-by-one error (with a resultant integer underflow) affecting 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-10d2bb2e6b1d.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

High
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

None
Availability (A)

High

Integer Underflow Affecting kernel package, versions *

Severity

Based on Red Hat Enterprise Linux security rating