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CVE-2022-42721

Published: 14 October 2022

A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to corrupt a linked list and, in turn, potentially execute code.

From the Ubuntu Security Team

Sönke Huster discovered that the WiFi driver stack in the Linux kernel did not properly handle BSSID/SSID lists in some situations. A physically proximate attacker could use this to cause a denial of service (infinite loop).

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
backport-iwlwifi-dkms
Launchpad, Ubuntu, Debian
bionic Needs triage

focal
Released (8324-0ubuntu3~20.04.5)
jammy
Released (9858-0ubuntu3.1)
kinetic
Released (9904-0ubuntu3.1)
trusty Ignored
(out of standard support)
upstream Needs triage

xenial Ignored
(out of standard support)
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
focal
Released (5.4.0-131.147)
jammy
Released (5.15.0-52.58)
kinetic
Released (5.19.0-23.24)
trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.4.0-2.16)
Patches:
Introduced by

0b8fb8235be8be99a197e8d948fc0a2df8dc261a

Fixed by bcca852027e5878aec911a347407ecc88d6fff7f|local-CVE-2022-42721-fix
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
focal
Released (5.4.0-1088.96)
jammy
Released (5.15.0-1022.26)
kinetic
Released (5.19.0-1011.12)
trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.4.0-1001.10)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-aws-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-aws-5.13)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.13)
xenial Does not exist

linux-aws-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-aws-5.15)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.15)
xenial Does not exist

linux-aws-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-1022.26~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.4)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1088.96~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-aws-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-aws-5.11)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.11)
xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal
Released (5.4.0-1094.100)
jammy
Released (5.15.0-1022.27)
kinetic
Released (5.19.0-1010.11)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.11.0-1009.9)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1082.92)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-azure-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-azure-5.13)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.13)
xenial Does not exist

linux-azure-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-azure-5.15)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.15)
xenial Does not exist

linux-azure-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-1022.27~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.4)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1094.100~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-azure-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-azure-5.11)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.11)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-azure-fde
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needs triage

jammy
Released (5.15.0-1022.27)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-azure-fde-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Not vulnerable
(5.15.0-1019.24~20.04.1.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-bluefield
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1049.55)
jammy Not vulnerable
(5.15.0-1011.13)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1005.8)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-fips
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

trusty Ignored
(out of standard support)
upstream
Released (6.1~rc1)
xenial Ignored
(out of standard support)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
focal
Released (5.4.0-1092.101)
jammy
Released (5.15.0-1021.28)
kinetic
Released (5.19.0-1010.11)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.10.0-1004.4)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1071.81)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gcp-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.13)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.13)
xenial Does not exist

linux-gcp-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.15)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.15)
xenial Does not exist

linux-gcp-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-1021.28~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.4)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1092.101~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gcp-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.11)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.11)
xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1086.93)
jammy
Released (5.15.0-1019.23)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Ignored
(reached end of standard support)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gke-5.3)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gke-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-1019.23~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gke-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gke-5.4)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gkeop
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1056.60)
jammy
Released (5.15.0-1007.10)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.8.0-39.42~16.04.1)
linux-hwe-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.13)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-hwe-5.13)
xenial Does not exist

linux-hwe-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.15)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-hwe-5.15)
xenial Does not exist

linux-hwe-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-52.58~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-131.147~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.11)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-hwe-5.11)
xenial Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-hwe-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-ibm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1036.41)
jammy
Released (5.15.0-1017.20)
kinetic
Released (5.19.0-1010.11)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1036.41~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-intel-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-intel-iotg
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Pending
(5.15.0-1018.23)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-intel-iotg-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.15.0-1018.23~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
focal
Released (5.4.0-1078.84)
jammy
Released (5.15.0-1020.24)
kinetic
Released (5.19.0-1010.11)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.4.0-1004.9)
linux-lowlatency
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy
Released (5.15.0-52.58)
kinetic
Released (5.19.0-1009.10)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-lowlatency-hwe-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-52.58~20.04.1)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (6.1~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-oem-5.10
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oem-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-oem-5.14)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oem-5.14)
xenial Does not exist

linux-oem-5.14
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.14.0-1054.61)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oem-5.17
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy
Released (5.17.0-1020.21)
kinetic Needs triage

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oem-6.0
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Not vulnerable
(6.0.0-1006.6)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oem-6.1
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Pending

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
focal
Released (5.4.0-1086.95)
jammy
Released (5.15.0-1021.27)
kinetic
Released (5.19.0-1010.11)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oracle-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-oracle-5.13)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oracle-5.13)
xenial Does not exist

linux-oracle-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oracle-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.15.0-1021.27~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oracle-5.4)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1086.95~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-oracle-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-oracle-5.11)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oracle-5.11)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1073.84)
jammy
Released (5.15.0-1017.19)
kinetic
Released (5.19.0-1006.13)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1073.84~18.04.1)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-1005.5)
focal Ignored
(replaced by linux-raspi)
jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Ignored
(end of standard support)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-raspi-5.4)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-raspi2-5.4)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.8)
jammy Pending
(5.15.0-1022.26)
kinetic Pending
(5.19.0-1006.7)
trusty Does not exist

upstream
Released (6.1~rc1)
xenial Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.13)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-riscv-5.13)
xenial Does not exist

linux-riscv-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.11)
jammy Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-riscv-5.11)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.4.0-1077.82)
focal Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (6.1~rc1)
xenial Ignored
(end of standard support)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H