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Ubuntu: (Multiple Advisories) (CVE-2021-4001): Linux kernel (OEM) vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-4001): Linux kernel (OEM) vulnerabilities

Severity
5
CVSS
(AV:L/AC:M/Au:N/C:N/I:C/A:N)
Published
01/05/2022
Created
01/08/2022
Added
01/06/2022
Modified
05/12/2022

Description

A race condition was found in the Linux kernel's ebpf verifier between bpf_map_update_elem and bpf_map_freeze due to a missing lock in kernel/bpf/syscall.c. In this flaw, a local user with a special privilege (cap_sys_admin or cap_bpf) can modify the frozen mapped address space. This flaw affects kernel versions prior to 5.16 rc2.

Solution(s)

  • ubuntu-upgrade-linux-image-5-10-0-1053-oem
  • 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-5-14-0-1022-oem
  • 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-64k-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-hwe-20-04
  • ubuntu-upgrade-linux-image-generic-lpae
  • ubuntu-upgrade-linux-image-generic-lpae-hwe-20-04
  • ubuntu-upgrade-linux-image-gke
  • ubuntu-upgrade-linux-image-kvm
  • ubuntu-upgrade-linux-image-lowlatency
  • ubuntu-upgrade-linux-image-lowlatency-hwe-20-04
  • ubuntu-upgrade-linux-image-oem-20-04
  • ubuntu-upgrade-linux-image-oem-20-04b
  • ubuntu-upgrade-linux-image-oem-20-04c
  • ubuntu-upgrade-linux-image-oem-20-04d
  • ubuntu-upgrade-linux-image-oracle
  • ubuntu-upgrade-linux-image-raspi
  • ubuntu-upgrade-linux-image-raspi-nolpae
  • ubuntu-upgrade-linux-image-virtual
  • ubuntu-upgrade-linux-image-virtual-hwe-20-04

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