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CVE-2021-41073

Published: 19 September 2021

loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

From the Ubuntu security team

Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code.

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(3.11.0-12.19)
xenial Not vulnerable
(4.4.0-2.16)
impish Not vulnerable
(5.13.0-19.19)
bionic Not vulnerable
(4.13.0-16.19)
focal Not vulnerable
(5.4.0-9.12)
upstream
Released (5.15~rc2)
hirsute
Released (5.11.0-37.41)
jammy Not vulnerable
(5.13.0-19.19)
linux-hwe
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Not vulnerable
(4.8.0-39.42~16.04.1)
impish Does not exist

bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-37.41~18.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-hwe-5.8
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
(5.8.0-23.24~20.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-hwe-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

focal
Released (5.11.0-37.41~20.04.2)
upstream
Released (5.15~rc2)
jammy Does not exist

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

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(superseded by linux-hwe)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

bionic Ignored
(superseded by linux-hwe-5.4)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(4.4.0-13.29~14.04.1)
xenial Does not exist

impish Does not exist

bionic Does not exist

focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Not vulnerable
(4.4.0-1004.9)
impish Not vulnerable
(5.13.0-1003.3)
bionic Not vulnerable
(4.15.0-1002.2)
focal Not vulnerable
(5.4.0-1004.4)
upstream
Released (5.15~rc2)
hirsute
Released (5.11.0-1017.18)
jammy Not vulnerable
(5.13.0-1004.4)
linux-aws
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(4.4.0-1002.2)
xenial Not vulnerable
(4.4.0-1001.10)
impish Not vulnerable
(5.13.0-1005.6)
bionic Not vulnerable
(4.15.0-1001.1)
focal Not vulnerable
(5.4.0-1005.5)
upstream
Released (5.15~rc2)
hirsute
Released (5.11.0-1019.20)
jammy Not vulnerable
(5.13.0-1005.6)
linux-aws-5.0
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-aws-5.4)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1018.18~18.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
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 (5.15~rc2)
focal
Released (5.11.0-1019.20~20.04.1)
jammy Does not exist

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

xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
impish Does not exist

bionic Does not exist

focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

linux-azure
Launchpad, Ubuntu, Debian
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial Not vulnerable
(4.11.0-1009.9)
impish Not vulnerable
(5.13.0-1006.7)
bionic Ignored
(superseded by linux-azure-5.3)
focal Not vulnerable
(5.4.0-1006.6)
upstream
Released (5.15~rc2)
hirsute
Released (5.11.0-1017.18)
jammy Not vulnerable
(5.13.0-1006.7)
linux-azure-4.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1082.92)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-azure-5.4)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1020.20~18.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-azure-5.8
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
(5.8.0-1033.35~20.04.1)
upstream
Released (5.15~rc2)
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 (5.15~rc2)
focal
Released (5.11.0-1017.18~20.04.1)
jammy Does not exist

linux-bluefield
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
(5.4.0-1007.10)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1005.8)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-azure-5.3)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Not vulnerable
(4.10.0-1004.4)
impish Not vulnerable
(5.13.0-1005.6)
bionic Ignored
(superseded by linux-gcp-5.3)
focal Not vulnerable
(5.4.0-1005.5)
upstream
Released (5.15~rc2)
hirsute
Released (5.11.0-1020.22)
jammy Not vulnerable
(5.13.0-1005.6)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(4.15.0-1071.81)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-gcp-5.4)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1019.19~18.04.2)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-gcp-5.3)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

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

bionic Does not exist

hirsute Does not exist

focal Not vulnerable
(5.4.0-1033.35)
upstream
Released (5.15~rc2)
jammy Not vulnerable
(5.15.0-1002.2)
linux-gke-4.15
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1025.25~18.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-gkeop
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
(5.4.0-1008.9)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1001.1)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
impish Not vulnerable
(5.13.0-1008.10)
bionic Not vulnerable
(4.15.0-1007.9)
focal Not vulnerable
(5.4.0-1005.5)
upstream
Released (5.15~rc2)
hirsute
Released (5.11.0-1019.20)
jammy Not vulnerable
(5.13.0-1008.10)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

impish Does not exist

bionic Ignored
(superseded by linux-oracle-5.4)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1019.19~18.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
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

focal
Released (5.11.0-1019.20~20.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

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

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

focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

focal Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

linux-oem-5.10
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 (5.15~rc2)
focal
Released (5.10.0-1049.51)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

hirsute Does not exist

focal
Released (5.13.0-1014.18)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Not vulnerable
(5.13.0-1008.9)
bionic Does not exist

focal Not vulnerable
(5.4.0-1007.7)
hirsute
Released (5.11.0-1019.20)
upstream
Released (5.15~rc2)
jammy Not vulnerable
(5.13.0-1008.9)
linux-raspi2
Launchpad, Ubuntu, Debian
trusty Does not exist

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

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

bionic Not vulnerable
(4.13.0-1005.5)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Ignored
(was needs-triage now end-of-life)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

focal Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1013.13~18.04.1)
upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

impish Not vulnerable
(5.13.0-1004.4)
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.8)
hirsute
Released (5.11.0-1020.21)
upstream
Released (5.15~rc2)
jammy Not vulnerable
(5.13.0-1004.4)
linux-riscv-5.8
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 (5.15~rc2)
focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

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

xenial Does not exist

impish Does not exist

bionic Does not exist

focal
Released (5.11.0-1020.21~20.04.1)
hirsute Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

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

bionic Not vulnerable
(4.4.0-1077.82)
focal Does not exist

hirsute Does not exist

upstream
Released (5.15~rc2)
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

upstream
Released (5.15~rc2)
focal Not vulnerable
(5.4.0-1003.4)
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

focal
Released (5.11.0-1020.22~20.04.1)
hirsute Does not exist

impish Does not exist

upstream
Released (5.15~rc2)
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 (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

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

impish Does not exist

upstream
Released (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.13.0-1009.10~20.04.2)
upstream
Released (5.15~rc2)
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 (5.15~rc2)
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 (5.15~rc2)
jammy Does not exist

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

bionic Does not exist

focal Does not exist

hirsute Does not exist

impish Does not exist

upstream
Released (5.15~rc2)
xenial Not vulnerable
(4.4.0-1073.79)
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 (5.15~rc2)
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 (5.15~rc2)
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 (5.15~rc2)
jammy Does not exist

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

xenial Does not exist

bionic Does not exist

impish Does not exist

focal Not vulnerable
(5.4.0-1063.66+cvm2.2)
upstream
Released (5.15~rc2)
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