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CVE-2020-10742

Published: 2 June 2021

A flaw was found in the Linux kernel. An index buffer overflow during Direct IO write leading to the NFS client to crash. In some cases, a reach out of the index after one memory allocation by kmalloc will cause a kernel panic. The highest threat from this vulnerability is to data confidentiality and system availability.

Notes

AuthorNote
sbeattie
reproducer in Red Hat bug 1824270.

Priority

Medium

Cvss 3 Severity Score

6.0

Score breakdown

Status

Package Release Status
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
trusty Ignored
(was needs-triage ESM criteria)
xenial Not vulnerable
(4.4.0-1001.10)
upstream
Released (3.16~rc1)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-gcp-4.15
Launchpad, Ubuntu, Debian
upstream
Released (3.16~rc1)
bionic Not vulnerable
(4.15.0-1071.81)
eoan Does not exist

focal Does not exist

trusty Does not exist

xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
eoan Not vulnerable
(4.15.0-1035.40)
focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Ignored
(end of standard support, was needs-triage)
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
eoan Not vulnerable
(5.0.0-13.14)
focal Not vulnerable
(5.4.0-9.12)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.2.0-16.19)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 91f79c43d1b54d7154b118860d81b39bad07dfff
linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1016.17~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

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

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1006.6)
trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.11.0-1009.9)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1082.92)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1007.8~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.10.0-1004.4)
linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1008.9~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1030.32)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-13.14~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Ignored
(end of life, was needs-triage)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1004.4)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.4.0-1004.9)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

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

eoan Does not exist

focal Does not exist

trusty Ignored
(was needs-triage ESM criteria)
upstream
Released (3.16~rc1)
xenial Does not exist

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

eoan Does not exist

focal Not vulnerable
(5.6.0-1007.7)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1010.11)
eoan Not vulnerable
(5.0.0-1010.11)
focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
eoan Not vulnerable
(4.15.0-1011.13)
focal Not vulnerable
(5.4.0-1005.5)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needs-triage)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

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

eoan Does not exist

focal Not vulnerable
(5.4.0-1007.7)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-1005.5)
eoan Not vulnerable
(5.0.0-1006.6)
focal Ignored
(end of life, was needs-triage)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.2.0-1013.19)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1017.19~18.04.1)
eoan Does not exist

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

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

eoan Does not exist

focal Not vulnerable
(5.4.0-24.28)
trusty Does not exist

upstream
Released (3.16~rc1)
xenial Does not exist

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

focal Does not exist

trusty Does not exist

upstream
Released (3.16~rc1)
xenial Not vulnerable
(4.4.0-1013.15)

Severity score breakdown

Parameter Value
Base score 6.0
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H