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Ubuntu: (Multiple Advisories) (CVE-2020-25641): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2020-25641): Linux kernel vulnerabilities

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:C)
Published
10/06/2020
Created
12/05/2020
Added
12/03/2020
Modified
03/22/2023

Description

A flaw was found in the Linux kernel's implementation of biovecs in versions before 5.9-rc7. A zero-length biovec request issued by the block subsystem could cause the kernel to enter an infinite loop, causing a denial of service. This flaw allows a local attacker with basic privileges to issue requests to a block device, resulting in a denial of service. The highest threat from this vulnerability is to 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-5-4-0-1021-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1026-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1028-aws
  • ubuntu-upgrade-linux-image-5-4-0-1028-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1028-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1031-azure
  • ubuntu-upgrade-linux-image-5-4-0-51-generic
  • ubuntu-upgrade-linux-image-5-4-0-51-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-51-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-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-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-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

References

  • https://attackerkb.com/topics/cve-2020-25641
  • CVE - 2020-25641
  • CVE-2020-25641
  • 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-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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