Main Vulnerability Database SB2021090723

SB2021090723 - Red Hat Enterprise Linux 8 update for kernel-rt

Published: September 7, 2021

Security Bulletin ID SB2021090723

CSH Severity

Low

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Partial DoS

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2021-38201)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the net/sunrpc/xdr.c in the Linux kernel. A remote user can perform multiple NFS 4.2 READ_PLUS operations and cause a denial of service attack.

Remediation

Install update from vendor's website.

References

https://access.redhat.com/errata/RHSA-2021:3440