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CVE-2022-24448

Published: 4 February 2022

An issue was discovered in fs/nfs/dir.c in the Linux kernel before 5.16.5. If an application sets the O_DIRECTORY flag, and tries to open a regular file, nfs_atomic_open() performs a regular lookup. If a regular file is found, ENOTDIR should occur, but the server instead returns uninitialized data in the file descriptor.

From the Ubuntu security team

Lyu Tao discovered that the NFS implementation in the Linux kernel did not properly handle requests to open a directory on a regular file. A local attacker could use this to expose sensitive information (kernel memory).

Priority

Medium

CVSS 3 base score: 3.3

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-176.185)
focal
Released (5.4.0-109.123)
impish
Released (5.13.0-40.45)
jammy Not vulnerable
(5.15.0-22.22)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc2)
xenial Ignored
(was needed ESM criteria)
linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1127.136)
focal
Released (5.4.0-1072.77)
impish
Released (5.13.0-1022.24)
jammy Not vulnerable
(5.15.0-1002.4)
trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc2)
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(superseded by linux-aws-5.3)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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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(superseded by linux-aws-5.4)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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1072.77~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial
Released (4.15.0-1127.136~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal
Released (5.4.0-1077.80)
impish
Released (5.13.0-1022.26)
jammy Not vulnerable
(5.15.0-1001.2)
trusty
Released (4.15.0-1137.150~14.04.1)
upstream
Released (5.17~rc2)
xenial
Released (4.15.0-1137.150~16.04.1)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1137.150)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1077.80~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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 Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

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

focal Pending
(5.4.0-1033.36)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1041.46)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Ignored
(was needed ESM criteria)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
focal
Released (5.4.0-1072.77)
impish
Released (5.13.0-1024.29)
jammy Not vulnerable
(5.15.0-1001.3)
trusty Does not exist

upstream
Released (5.17~rc2)
xenial
Released (4.15.0-1121.135~16.04.1)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1121.135)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1072.77~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

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

focal
Released (5.4.0-1068.71)
impish Does not exist

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

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1068.71~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

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

focal
Released (5.4.0-1039.40)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1039.40~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial
Released (4.15.0-176.185~16.04.1)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-109.123~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Ignored
(superseded by linux-hwe)
linux-ibm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1020.22)
impish Does not exist

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

upstream
Released (5.17~rc2)
xenial Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1020.22~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1113.116)
focal
Released (5.4.0-1062.65)
impish
Released (5.13.0-1021.22)
jammy Not vulnerable
(5.15.0-1002.2)
trusty Does not exist

upstream
Released (5.17~rc2)
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

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

trusty Ignored
(was needed ESM criteria)
upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream Needs triage

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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1092.101)
focal
Released (5.4.0-1070.76)
impish
Released (5.13.0-1027.32)
jammy Not vulnerable
(5.15.0-1001.3)
trusty Does not exist

upstream
Released (5.17~rc2)
xenial
Released (4.15.0-1092.101~16.04.1)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1070.76~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

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

focal
Released (5.4.0-1059.67)
impish
Released (5.13.0-1025.27)
jammy Not vulnerable
(5.15.0-1003.3)
trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1059.66~18.04.1)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Pending
(4.15.0-1108.115)
focal Ignored
(replaced by linux-raspi)
impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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)
trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
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

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1126.135)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream
Released (5.17~rc2)
xenial Ignored
(was needs-triage now end-of-life)