Rapid7 Vulnerability & Exploit Database

Ubuntu: (Multiple Advisories) (CVE-2021-31829): Linux kernel vulnerabilities

Back to Search

Ubuntu: (Multiple Advisories) (CVE-2021-31829): Linux kernel vulnerabilities

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
05/06/2021
Created
06/07/2021
Added
06/04/2021
Modified
08/25/2021

Description

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

Solution(s)

  • ubuntu-upgrade-
  • ubuntu-upgrade-4-15-0-1078-86-16-04-1
  • ubuntu-upgrade-4-15-0-1121-134-16-04-1
  • ubuntu-upgrade-4-15-0-1121-94
  • ubuntu-upgrade-4-15-0-151-146
  • ubuntu-upgrade-4-15-0-151-157-16-04-1
  • ubuntu-upgrade-available
  • ubuntu-upgrade-desktop
  • ubuntu-upgrade-infra
  • ubuntu-upgrade-linux-image-4-15-0-1078-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1092-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1097-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1106-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1109-aws
  • ubuntu-upgrade-linux-image-4-15-0-1109-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1121-azure
  • ubuntu-upgrade-linux-image-4-15-0-151-generic
  • ubuntu-upgrade-linux-image-4-15-0-151-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-151-lowlatency
  • ubuntu-upgrade-linux-image-5-10-0-1029-oem
  • ubuntu-upgrade-linux-image-5-11-0-1009-azure
  • ubuntu-upgrade-linux-image-5-11-0-1009-kvm
  • ubuntu-upgrade-linux-image-5-11-0-1010-oracle
  • ubuntu-upgrade-linux-image-5-11-0-1011-aws
  • ubuntu-upgrade-linux-image-5-11-0-1011-gcp
  • ubuntu-upgrade-linux-image-5-11-0-1012-raspi
  • ubuntu-upgrade-linux-image-5-11-0-1012-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-11-0-22-generic
  • ubuntu-upgrade-linux-image-5-11-0-22-generic-64k
  • ubuntu-upgrade-linux-image-5-11-0-22-generic-lpae
  • ubuntu-upgrade-linux-image-5-11-0-22-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-1018-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1038-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1041-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1046-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1046-gke
  • ubuntu-upgrade-linux-image-5-4-0-1048-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1051-aws
  • ubuntu-upgrade-linux-image-5-4-0-1051-azure
  • ubuntu-upgrade-linux-image-5-4-0-77-generic
  • ubuntu-upgrade-linux-image-5-4-0-77-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-77-lowlatency
  • ubuntu-upgrade-linux-image-5-8-0-1029-raspi
  • ubuntu-upgrade-linux-image-5-8-0-1029-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-8-0-1030-kvm
  • ubuntu-upgrade-linux-image-5-8-0-1033-oracle
  • ubuntu-upgrade-linux-image-5-8-0-1035-gcp
  • ubuntu-upgrade-linux-image-5-8-0-1036-azure
  • ubuntu-upgrade-linux-image-5-8-0-1038-aws
  • ubuntu-upgrade-linux-image-5-8-0-59-generic
  • ubuntu-upgrade-linux-image-5-8-0-59-generic-64k
  • ubuntu-upgrade-linux-image-5-8-0-59-generic-lpae
  • ubuntu-upgrade-linux-image-5-8-0-59-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-aws-lts-20-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-azure-lts-20-04
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-18-04
  • ubuntu-upgrade-linux-image-gcp-lts-20-04
  • 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-18-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-5-4
  • ubuntu-upgrade-linux-image-gkeop
  • ubuntu-upgrade-linux-image-gkeop-5-4
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-oracle-lts-20-04
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-hwe-18-04
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-raspi2
  • ubuntu-upgrade-linux-image-snapdragon
  • ubuntu-upgrade-linux-image-snapdragon-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04
  • ubuntu-upgrade-or
  • ubuntu-upgrade-ua
  • ubuntu-upgrade-with

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

;