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Ubuntu: (Multiple Advisories) (CVE-2020-12656): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2020-12656): Linux kernel vulnerabilities

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
05/05/2020
Created
09/04/2020
Added
09/02/2020
Modified
11/08/2023

Description

gss_mech_free in net/sunrpc/auth_gss/gss_mech_switch.c in the rpcsec_gss_krb5 implementation in the Linux kernel through 5.6.10 lacks certain domain_release calls, leading to a memory leak. Note: This was disputed with the assertion that the issue does not grant any access not already available. It is a problem that on unloading a specific kernel module some memory is leaked, but loading kernel modules is a privileged operation. A user could also write a kernel module to consume any amount of memory they like and load that replicating the effect of this bug

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1051-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1067-gke
  • ubuntu-upgrade-linux-image-4-15-0-1068-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1072-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1080-aws
  • ubuntu-upgrade-linux-image-4-15-0-1081-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1084-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1093-azure
  • ubuntu-upgrade-linux-image-4-15-0-1094-oem
  • ubuntu-upgrade-linux-image-4-15-0-115-generic
  • ubuntu-upgrade-linux-image-4-15-0-115-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-115-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-1016-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1022-aws
  • ubuntu-upgrade-linux-image-5-4-0-1022-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1022-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1023-azure
  • ubuntu-upgrade-linux-image-5-4-0-45-generic
  • ubuntu-upgrade-linux-image-5-4-0-45-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-45-lowlatency
  • ubuntu-upgrade-linux-image-aws
  • ubuntu-upgrade-linux-image-aws-edge
  • ubuntu-upgrade-linux-image-aws-hwe
  • ubuntu-upgrade-linux-image-aws-lts-18-04
  • ubuntu-upgrade-linux-image-azure
  • ubuntu-upgrade-linux-image-azure-edge
  • ubuntu-upgrade-linux-image-azure-lts-18-04
  • ubuntu-upgrade-linux-image-gcp
  • ubuntu-upgrade-linux-image-gcp-lts-18-04
  • ubuntu-upgrade-linux-image-generic
  • ubuntu-upgrade-linux-image-generic-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-4-15
  • ubuntu-upgrade-linux-image-gke-5-4
  • 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-oem
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-hwe-18-04
  • 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

References

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