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CVE-2021-44879

Published: 14 February 2022

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

From the Ubuntu Security Team

Wenqing Liu discovered that the f2fs file system implementation in the Linux kernel did not properly validate inode types while performing garbage collection. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

impish
Released (5.13.0-40.45)
jammy Not vulnerable
(5.15.0-22.22)
kinetic Not vulnerable
(5.15.0-25.25)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
Patches:
Introduced by

7bc0900347e069a1676d28ad6f98cafaf8cfd6e9

Fixed by 9056d6489f5a41cfbb67f719d2c0ce61ead72d9f
linux-aws
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

impish
Released (5.13.0-1022.24)
jammy Not vulnerable
(5.15.0-1002.4)
kinetic Not vulnerable
(5.15.0-1004.6)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Ignored
(was needed now end-of-life)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.13.0-1022.24~20.04.1)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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(superseded by linux-aws-5.4)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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal Needed

impish
Released (5.13.0-1022.26)
jammy Not vulnerable
(5.15.0-1001.2)
kinetic Not vulnerable
(5.15.0-1003.4)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Ignored
(was needed now end-of-life)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.13.0-1022.26~20.04.1)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Needs triage

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

focal Needed

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Does not exist

hirsute Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(out of standard support)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
focal Needed

impish
Released (5.13.0-1024.29)
jammy Not vulnerable
(5.15.0-1001.3)
kinetic Not vulnerable
(5.15.0-1003.6)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Ignored
(was needed now end-of-life)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.13.0-1024.29~20.04.1)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Needed

impish Does not exist

jammy Not vulnerable
(5.15.0-1002.2)
kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Needed

impish Does not exist

jammy Needs triage

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-hwe-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.13.0-40.45~20.04.1)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-ibm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needed

impish Does not exist

jammy Not vulnerable
(5.15.0-1002.2)
kinetic Not vulnerable
(5.15.0-1002.2)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.13.0-1011.11)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Does not exist

impish Does not exist

jammy Not vulnerable

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

focal Not vulnerable

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

impish
Released (5.13.0-1021.22)
jammy Not vulnerable
(5.15.0-1002.2)
kinetic Not vulnerable
(5.15.0-1004.4)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-lowlatency
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

impish Does not exist

jammy Not vulnerable
(5.15.0-22.22)
kinetic Not vulnerable
(5.15.0-24.24)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc1)
xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~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)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.14.0-1024.26)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Does not exist

impish Does not exist

jammy Not vulnerable
(5.17.0-1003.3)
kinetic Not vulnerable
(5.17.0-1003.3)
trusty Does not exist

upstream
Released (5.17~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)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

impish
Released (5.13.0-1027.32)
jammy Not vulnerable
(5.15.0-1001.3)
kinetic Not vulnerable
(5.15.0-1002.4)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needed ESM criteria)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Ignored
(was needed now end-of-life)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal
Released (5.13.0-1027.32~20.04.1)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Not vulnerable

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

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

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Needed

impish
Released (5.13.0-1025.27)
jammy Not vulnerable
(5.15.0-1003.3)
kinetic Not vulnerable
(5.15.0-1005.5)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Needed

focal Ignored
(replaced by linux-raspi)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needs-triage now end-of-life)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-raspi-5.4)
focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Ignored
(superseded by linux-riscv-5.8)
impish
Released (5.13.0-1020.22)
jammy Not vulnerable
(5.15.0-1004.4)
kinetic Not vulnerable
(5.15.0-1007.7)
trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

focal Ignored
(was needed now end-of-life)
impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

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

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

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

impish Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (5.17~rc1)
xenial Ignored
(was needs-triage now end-of-life)