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Ubuntu: (Multiple Advisories) (CVE-2020-25643): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2020-25643): Linux kernel vulnerabilities

Severity
8
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:C)
Published
10/06/2020
Created
12/04/2020
Added
12/02/2020
Modified
03/22/2023

Description

A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1059-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1061-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1074-gke
  • ubuntu-upgrade-linux-image-4-15-0-1074-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1076-gke
  • ubuntu-upgrade-linux-image-4-15-0-1079-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1081-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1088-aws
  • ubuntu-upgrade-linux-image-4-15-0-1088-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1090-aws
  • ubuntu-upgrade-linux-image-4-15-0-1090-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1091-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1093-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1100-azure
  • ubuntu-upgrade-linux-image-4-15-0-1102-azure
  • ubuntu-upgrade-linux-image-4-15-0-1103-oem
  • ubuntu-upgrade-linux-image-4-15-0-126-generic
  • ubuntu-upgrade-linux-image-4-15-0-126-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-126-lowlatency
  • ubuntu-upgrade-linux-image-4-15-0-128-generic
  • ubuntu-upgrade-linux-image-4-15-0-128-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-128-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-1082-aws
  • ubuntu-upgrade-linux-image-4-4-0-1084-kvm
  • ubuntu-upgrade-linux-image-4-4-0-1118-aws
  • ubuntu-upgrade-linux-image-4-4-0-1142-raspi2
  • ubuntu-upgrade-linux-image-4-4-0-1146-snapdragon
  • ubuntu-upgrade-linux-image-4-4-0-197-generic
  • ubuntu-upgrade-linux-image-4-4-0-197-generic-lpae
  • ubuntu-upgrade-linux-image-4-4-0-197-lowlatency
  • ubuntu-upgrade-linux-image-4-4-0-197-powerpc-e500mc
  • ubuntu-upgrade-linux-image-4-4-0-197-powerpc-smp
  • ubuntu-upgrade-linux-image-4-4-0-197-powerpc64-emb
  • ubuntu-upgrade-linux-image-4-4-0-197-powerpc64-smp
  • ubuntu-upgrade-linux-image-5-4-0-1023-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1025-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1028-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1030-aws
  • ubuntu-upgrade-linux-image-5-4-0-1030-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1030-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1030-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1032-aws
  • ubuntu-upgrade-linux-image-5-4-0-1032-azure
  • ubuntu-upgrade-linux-image-5-4-0-1032-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1032-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1033-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1034-azure
  • ubuntu-upgrade-linux-image-5-4-0-56-generic
  • ubuntu-upgrade-linux-image-5-4-0-56-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-56-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-58-generic
  • ubuntu-upgrade-linux-image-5-4-0-58-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-58-lowlatency
  • ubuntu-upgrade-linux-image-5-6-0-1048-oem
  • ubuntu-upgrade-linux-image-aws
  • 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-16-04
  • 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-16-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae-lts-xenial
  • ubuntu-upgrade-linux-image-generic-lts-xenial
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-gke-4-15
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-lowlatency-lts-xenial
  • ubuntu-upgrade-linux-image-oem
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-osp1
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-oracle-lts-18-04
  • ubuntu-upgrade-linux-image-powerpc-e500mc
  • ubuntu-upgrade-linux-image-powerpc-e500mc-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc-smp
  • ubuntu-upgrade-linux-image-powerpc-smp-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-emb
  • ubuntu-upgrade-linux-image-powerpc64-emb-lts-xenial
  • ubuntu-upgrade-linux-image-powerpc64-smp
  • ubuntu-upgrade-linux-image-powerpc64-smp-lts-xenial
  • 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-16-04
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04
  • ubuntu-upgrade-linux-image-virtual-lts-xenial

References

  • https://attackerkb.com/topics/cve-2020-25643
  • CVE - 2020-25643
  • DSA-4774
  • CVE-2020-25643
  • USN-4525-1
  • USN-4527-1
  • USN-4576-1
  • USN-4578-1
  • USN-4579-1
  • USN-4592-1
  • USN-4657-1
  • USN-4658-1
  • USN-4658-2
  • USN-4659-1
  • USN-4660-1
  • USN-4660-2
  • USN-4679-1
  • USN-4680-1
  • USN-4710-1
  • USN-4711-1
  • USN-4748-1
  • USN-4749-1
  • USN-4750-1
  • USN-4751-1
  • USN-4752-1
  • USN-5130-1
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