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Ubuntu: (Multiple Advisories) (CVE-2021-3640): Linux kernel vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-3640): Linux kernel vulnerabilities

Severity
7
CVSS
(AV:L/AC:M/Au:N/C:C/I:C/A:C)
Published
09/16/2021
Created
02/05/2022
Added
02/03/2022
Modified
03/22/2023

Description

A flaw use-after-free in function sco_sock_sendmsg() of the Linux kernel HCI subsystem was found in the way user calls ioct UFFDIO_REGISTER or other way triggers race condition of the call sco_conn_del() together with the call sco_sock_sendmsg() with the expected controllable faulting memory page. A privileged local user could use this flaw to crash the system or escalate their privileges on the system.

Solution(s)

  • ubuntu-upgrade-linux-image-4-15-0-1034-dell300x
  • ubuntu-upgrade-linux-image-4-15-0-1086-oracle
  • ubuntu-upgrade-linux-image-4-15-0-1102-raspi2
  • ubuntu-upgrade-linux-image-4-15-0-1106-kvm
  • ubuntu-upgrade-linux-image-4-15-0-1115-gcp
  • ubuntu-upgrade-linux-image-4-15-0-1119-snapdragon
  • ubuntu-upgrade-linux-image-4-15-0-1130-azure
  • ubuntu-upgrade-linux-image-4-15-0-167-generic
  • ubuntu-upgrade-linux-image-4-15-0-167-generic-lpae
  • ubuntu-upgrade-linux-image-4-15-0-167-lowlatency
  • ubuntu-upgrade-linux-image-5-11-0-1028-azure
  • ubuntu-upgrade-linux-image-5-11-0-1028-oracle
  • ubuntu-upgrade-linux-image-5-11-0-1029-gcp
  • ubuntu-upgrade-linux-image-5-13-0-1011-kvm
  • ubuntu-upgrade-linux-image-5-13-0-1012-aws
  • ubuntu-upgrade-linux-image-5-13-0-1013-gcp
  • ubuntu-upgrade-linux-image-5-13-0-1016-oracle
  • ubuntu-upgrade-linux-image-5-13-0-1016-raspi
  • ubuntu-upgrade-linux-image-5-13-0-1016-raspi-nolpae
  • ubuntu-upgrade-linux-image-5-13-0-1029-oem
  • ubuntu-upgrade-linux-image-5-13-0-28-generic
  • ubuntu-upgrade-linux-image-5-13-0-28-generic-64k
  • ubuntu-upgrade-linux-image-5-13-0-28-generic-lpae
  • ubuntu-upgrade-linux-image-5-13-0-28-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-1013-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1014-ibm
  • ubuntu-upgrade-linux-image-5-4-0-1026-bluefield
  • ubuntu-upgrade-linux-image-5-4-0-1032-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1033-gkeop
  • ubuntu-upgrade-linux-image-5-4-0-1052-raspi
  • ubuntu-upgrade-linux-image-5-4-0-1054-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1055-kvm
  • ubuntu-upgrade-linux-image-5-4-0-1062-gke
  • ubuntu-upgrade-linux-image-5-4-0-1062-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1063-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1063-oracle
  • ubuntu-upgrade-linux-image-5-4-0-1064-aws
  • ubuntu-upgrade-linux-image-5-4-0-1064-gcp
  • ubuntu-upgrade-linux-image-5-4-0-1065-aws
  • ubuntu-upgrade-linux-image-5-4-0-1068-azure
  • ubuntu-upgrade-linux-image-5-4-0-1069-azure
  • ubuntu-upgrade-linux-image-5-4-0-97-generic
  • ubuntu-upgrade-linux-image-5-4-0-97-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-97-lowlatency
  • ubuntu-upgrade-linux-image-5-4-0-99-generic
  • ubuntu-upgrade-linux-image-5-4-0-99-generic-lpae
  • ubuntu-upgrade-linux-image-5-4-0-99-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-20-04
  • ubuntu-upgrade-linux-image-bluefield
  • ubuntu-upgrade-linux-image-dell300x
  • 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-16-04
  • ubuntu-upgrade-linux-image-generic-hwe-18-04
  • ubuntu-upgrade-linux-image-generic-hwe-18-04-edge
  • 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-18-04-edge
  • 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-ibm
  • ubuntu-upgrade-linux-image-ibm-lts-20-04
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-16-04-edge
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04
  • ubuntu-upgrade-linux-image-lowlatency-hwe-18-04-edge
  • 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-20-04c
  • 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-16-04
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04
  • ubuntu-upgrade-linux-image-virtual-hwe-18-04-edge
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04

References

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