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CVE-2021-38201

Updated on 08 Aug 2021

Severity

7.5 High severity

Details

CVSS score
7.5
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

net/sunrpc/xdr.c in the Linux kernel before 5.13.4 allows remote attackers to cause a denial of service (xdr_set_page_base slab-out-of-bounds access) by performing many NFS 4.2 READ_PLUS operations.

Details

Affected product:
AlmaLinux 8 , CentOS 6 , CentOS 6 ELS , CentOS 6 plus , CentOS 7 , CentOS 7 ELS , CentOS 7 plus , CentOS 8 , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , CloudLinux 6 ELS , CloudLinux OS 6 , CloudLinux OS 6h , CloudLinux OS 7 , CloudLinux OS 7h , CloudLinux OS 8 , Debian 10 , Debian 10 cloud , Debian 9 , Endurance 7 eig 3.10 , OEL 8 Dell , OpenVZ 6 , Oracle Linux 6 ELS , Oracle Linux 8 , Proxmox VE 5 , Proxmox VE 6 , RHEL 6 , RHEL 7 , RHEL 8 , Rocky Linux 8 , Scientific 6 , Ubuntu 14.04 , Ubuntu 14.04 ESM , Ubuntu 16.04 , Ubuntu 16.04 ELS , Ubuntu 16.04 ESM , Ubuntu 18.04 , Ubuntu 18.04 ELS , Ubuntu 20.04
Affected packages:
linux @ 4.4.0 (+67 more)

Fixes

KernelCare state

Live-patch status from KernelCare for each operating system.

Operating system Status Covered kernels
AlmaLinux 8 Released
5 kernels
  • 4.18.0-305.el8
  • 4.18.0-305.12.1.el8_4
  • 4.18.0-305.3.1.el8_4
  • 4.18.0-305.10.2.el8_4
  • 4.18.0-305.7.1.el8_4
CentOS 8 Released
4 kernels
  • 4.18.0-305.10.2.el8_4
  • 4.18.0-305.7.1.el8_4
  • 4.18.0-305.3.1.el8
  • 4.18.0-305.12.1.el8_4
CloudLinux OS 7h Released
5 kernels
  • 4.18.0-305.10.2.2.lve.el7h
  • 4.18.0-305.10.2.lve.el7h
  • 4.18.0-305.7.1.lve.el7h
  • 4.18.0-305.12.1.lve.el7h
  • 4.18.0-305.lve.el7h
CloudLinux OS 8 Released
5 kernels
  • 4.18.0-305.lve.el8
  • 4.18.0-305.7.1.lve.el8
  • 4.18.0-305.10.2.2.lve.el8
  • 4.18.0-305.10.2.lve.el8
  • 4.18.0-305.12.1.lve.el8
Oracle Linux 8 Released
5 kernels
  • 4.18.0-305.3.1.el8_4
  • 4.18.0-305.7.1.el8_4
  • 4.18.0-305.el8
  • 4.18.0-305.10.2.el8_4
  • 4.18.0-305.12.1.el8_4
RHEL 8 Released
5 kernels
  • 4.18.0-305.10.2.el8_4
  • 4.18.0-305.7.1.el8_4
  • 4.18.0-305.3.1.el8_4
  • 4.18.0-305.12.1.el8_4
  • 4.18.0-305.el8
Rocky Linux 8 Released
4 kernels
  • 4.18.0-305.3.1.el8_4
  • 4.18.0-305.10.2.el8_4
  • 4.18.0-305.7.1.el8_4
  • 4.18.0-305.12.1.el8_4
Ubuntu 20.04 AWS Hirsute Released
1 kernel
  • 5.11.0-1017.18~20.04.1
Ubuntu 20.04 HWE Hirsute Released
4 kernels
  • 5.11.0-25.27~20.04.1
  • 5.11.0-34.36~20.04.1
  • 5.11.0-36.40~20.04.1
  • 5.11.0-27.29~20.04.1