<p>Upgrade <code>RHEL:8</code> <code>kernel-tools</code> to version 0:4.18.0-147.51.2.el8_1 or higher.<br>This issue was patched in <code>RHSA-2021:2722</code>.</p>

Out-of-bounds Write Affecting kernel-tools package, versions <0:4.18.0-147.51.2.el8_1

Threat Intelligence

0.19% (58^th percentile)

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Snyk ID SNYK-RHEL8-KERNELTOOLS-3945361
published 26 Jul 2021
disclosed 20 Jul 2021

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Introduced: 20 Jul 2021

CVE-2021-33909 Open this link in a new tab CWE-787 Open this link in a new tab

How to fix?

Upgrade RHEL:8 kernel-tools to version 0:4.18.0-147.51.2.el8_1 or higher.
This issue was patched in RHSA-2021:2722.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-tools package and not the kernel-tools package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

References

CVSS Scores

version 3.1

Attack Vector (AV)

Local
Attack Complexity (AC)

Low
Privileges Required (PR)

Low
User Interaction (UI)

None

Scope (S)

Unchanged

Confidentiality (C)

High
Integrity (I)

High
Availability (A)

High

Out-of-bounds Write Affecting kernel-tools package, versions <0:4.18.0-147.51.2.el8_1

Severity

Based on Red Hat Enterprise Linux security rating