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CVE-2021-38208

Published: 8 August 2021

net/nfc/llcp_sock.c in the Linux kernel before 5.12.10 allows local unprivileged users to cause a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call.

From the Ubuntu security team

It was discovered that the NFC implementation in the Linux kernel did not properly handle failed connect events leading to a NULL pointer dereference. A local attacker could use this to cause a denial of service.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-154.161)
focal
Released (5.4.0-81.91)
hirsute
Released (5.11.0-31.33)
impish Not vulnerable
(5.13.0-14.14)
upstream
Released (5.13~rc5)
trusty Ignored
(was needed ESM criteria)
xenial
Released (4.4.0-222.255)
jammy Not vulnerable
(5.13.0-19.19)
linux-hwe
Launchpad, Ubuntu, Debian
bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

hirsute Does not exist

trusty Does not exist

impish Does not exist

xenial
Released (4.15.0-154.161~16.04.1)
upstream
Released (5.13~rc5)
jammy Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-81.91~18.04.1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was pending [5.8.0-67.75] now end-of-life)
upstream
Released (5.13~rc5)
jammy Does not exist

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(superseded by linux-hwe-5.4)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

hirsute Does not exist

trusty Does not exist

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(superseded by linux-hwe)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

upstream
Released (5.13~rc5)
jammy Does not exist

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

focal Does not exist

hirsute Does not exist

xenial Does not exist

impish Does not exist

trusty
Released (4.4.0-222.255~14.04.1)
upstream
Released (5.13~rc5)
jammy Does not exist

linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1110.117)
focal
Released (5.4.0-1055.58)
impish Not vulnerable
(5.11.0-1015.16+21.10.1)
hirsute
Released (5.11.0-1016.17)
upstream
Released (5.13~rc5)
trusty
Released (4.4.0-1102.107)
xenial
Released (4.4.0-1138.152)
jammy Not vulnerable
(5.13.0-1005.6)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1055.58~18.04.1)
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

hirsute Does not exist

focal
Released (5.8.0-1042.44~20.04.1)
trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

focal Does not exist

hirsute Does not exist

trusty Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
xenial
Released (4.15.0-1110.117~16.04.1)
jammy Does not exist

linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
impish Not vulnerable
(5.11.0-1013.14+21.10.1)
upstream
Released (5.13~rc5)
trusty
Released (4.15.0-1122.135~14.04.1)
xenial
Released (4.15.0-1122.135~16.04.1)
focal
Released (5.4.0-1056.58)
hirsute
Released (5.11.0-1013.14)
jammy Not vulnerable
(5.13.0-1006.7)
linux-azure-4.15
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1122.135)
jammy Does not exist

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

hirsute Does not exist

upstream
Released (5.13~rc5)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-1056.58~18.04.1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal
Released (5.8.0-1040.43~20.04.1)
upstream
Released (5.13~rc5)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.4.0-1019.22)
jammy Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1027.32)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

impish Not vulnerable
(5.11.0-1016.18+21.10.2)
xenial
Released (4.15.0-1107.121~16.04.1)
upstream
Released (5.13~rc5)
focal
Released (5.4.0-1051.55)
hirsute
Released (5.11.0-1017.19)
jammy Not vulnerable
(5.13.0-1005.6)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1107.121)
jammy Does not exist

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

hirsute Does not exist

upstream
Released (5.13~rc5)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-1051.55~18.04.1)
jammy Does not exist

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

hirsute Does not exist

focal
Released (5.8.0-1039.41)
trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

hirsute Does not exist

upstream
Released (5.13~rc5)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Ignored
(reached end of standard support)
impish Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.4.0-1051.54)
jammy Not vulnerable
(5.15.0-1002.2)
linux-gke-4.15
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

upstream
Released (5.13~rc5)
bionic Ignored
(was needs-triage now end-of-life)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

upstream
Released (5.13~rc5)
bionic Ignored
(was needs-triage now end-of-life)
trusty Does not exist

xenial Does not exist

impish Does not exist

jammy Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-1051.54~18.04.1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.4.0-1022.23)
jammy Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-1022.23~18.04.1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-1053.57~18.04.1)
jammy Does not exist

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

hirsute Does not exist

focal
Released (5.8.0-1038.39~20.04.1)
trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-oem
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

upstream
Released (5.13~rc5)
bionic Ignored
(was needs-triage now end-of-life)
trusty Does not exist

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

jammy Does not exist

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

hirsute Does not exist

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

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-oem-5.10
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.10.0-1038.40)
hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

hirsute
Released (5.11.0-1016.17)
upstream
Released (5.13~rc5)
trusty Does not exist

xenial Does not exist

impish Not vulnerable
(5.13.0-1006.7)
focal
Released (5.4.0-1042.46)
jammy Not vulnerable
(5.13.0-1008.9)
linux-raspi2
Launchpad, Ubuntu, Debian
focal Ignored
(replaced by linux-raspi)
hirsute Does not exist

trusty Does not exist

xenial Ignored
(was needs-triage now end-of-life)
impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1094.100)
jammy Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (5.4.0-1042.46~18.04.3)
jammy Does not exist

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

hirsute
Released (5.11.0-1017.18)
upstream
Released (5.13~rc5)
focal Ignored
(was needs-triage now end-of-life)
trusty Does not exist

xenial Does not exist

impish Not vulnerable
(5.13.0-1002.2)
jammy Not vulnerable
(5.13.0-1004.4)
linux-riscv-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.13~rc5)
jammy Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
focal Does not exist

hirsute Does not exist

trusty Does not exist

xenial Ignored
(was needs-triage now end-of-life)
impish Does not exist

upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1111.120)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.11.0-34.36~20.04.1)
jammy Does not exist

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

hirsute Does not exist

trusty Does not exist

xenial Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.11.0-1017.18~20.04.1)
jammy Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
trusty Does not exist

impish Not vulnerable
(5.13.0-1001.1)
xenial
Released (4.4.0-1103.112)
upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1098.100)
focal
Released (5.4.0-1045.47)
hirsute
Released (5.11.0-1014.15)
jammy Not vulnerable
(5.13.0-1004.4)
linux-oracle
Launchpad, Ubuntu, Debian
trusty Does not exist

impish Not vulnerable
(5.11.0-1015.16+21.10.1)
xenial
Released (4.15.0-1079.87~16.04.1)
upstream
Released (5.13~rc5)
bionic
Released (4.15.0-1079.87)
focal
Released (5.4.0-1053.57)
hirsute
Released (5.11.0-1016.17)
jammy Not vulnerable
(5.13.0-1008.10)
linux-oem-5.13
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Does not exist

focal Not vulnerable
(5.13.0-1009.10)
hirsute Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.11.0-1016.17~20.04.1)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.11.0-1013.14~20.04.1)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

upstream
Released (5.13~rc5)
focal
Released (5.11.0-1016.17~20.04.1)
jammy Does not exist

linux-ibm
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

focal Not vulnerable
(5.4.0-1003.4)
upstream
Released (5.13~rc5)
jammy Not vulnerable
(5.15.0-1002.2)
linux-gcp-5.11
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal
Released (5.11.0-1017.19~20.04.1)
upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

hirsute Does not exist

impish Does not exist

focal Not vulnerable
(5.14.0-1004.4)
upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

focal Not vulnerable

hirsute Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(5.13.0-1009.10~20.04.2)
impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-21.21~20.04.1)
upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1008.9~20.04.2)
upstream
Released (5.13~rc5)
jammy Does not exist

linux-fips
Launchpad, Ubuntu, Debian
xenial Not vulnerable
(4.4.0-1073.79)
trusty Does not exist

bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1011.13~20.04.2)
upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1008.9~20.04.3)
upstream
Released (5.13~rc5)
jammy Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

impish Does not exist

bionic Not vulnerable
(5.4.0-1010.11~18.04.2)
upstream
Released (5.13~rc5)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

focal Not vulnerable
(5.4.0-1063.66+cvm2.2)
impish Does not exist

upstream
Released (5.13~rc5)
jammy Does not exist

linux-lowlatency
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

focal Does not exist

impish Does not exist

jammy Not vulnerable

upstream Needs triage

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

xenial Does not exist

bionic Does not exist

focal Does not exist

impish Does not exist

jammy Not vulnerable

upstream Needs triage