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Ubuntu: (Multiple Advisories) (CVE-2021-3543): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-3543): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
06/01/2021
Created
06/25/2021
Added
06/23/2021
Modified
03/22/2023

Description

A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.

Solution(s)

  • ubuntu-upgrade-linux-image-5-10-0-1033-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-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-lpae
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-virtual

References

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