Rapid7 Vulnerability & Exploit Database

Ubuntu: USN-4727-1 (CVE-2021-26708): Linux kernel vulnerability

Back to Search

Ubuntu: USN-4727-1 (CVE-2021-26708): Linux kernel vulnerability

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
02/05/2021
Created
02/13/2021
Added
02/10/2021
Modified
03/09/2021

Description

A local privilege escalation was discovered in the Linux kernel before 5.10.13. Multiple race conditions in the AF_VSOCK implementation are caused by wrong locking in net/vmw_vsock/af_vsock.c. The race conditions were implicitly introduced in the commits that added VSOCK multi-transport support.

Solution(s)

  • ubuntu-upgrade-linux-image-5-6-0-1047-oem
  • ubuntu-upgrade-linux-image-5-8-0-1015-raspi
  • ubuntu-upgrade-linux-image-5-8-0-1015-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-8-0-1018-kvm
  • ubuntu-upgrade-linux-image-5-8-0-1020-oracle
  • ubuntu-upgrade-linux-image-5-8-0-1022-azure
  • ubuntu-upgrade-linux-image-5-8-0-1022-gcp
  • ubuntu-upgrade-linux-image-5-8-0-1023-aws
  • ubuntu-upgrade-linux-image-5-8-0-43-generic
  • ubuntu-upgrade-linux-image-5-8-0-43-generic-64k
  • ubuntu-upgrade-linux-image-5-8-0-43-generic-lpae
  • ubuntu-upgrade-linux-image-5-8-0-43-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-64k
  • ubuntu-upgrade-linux-image-generic-64k-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;