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CVE-2017-17863

Published: 27 December 2017

kernel/bpf/verifier.c in the Linux kernel 4.9.x through 4.9.71 does not check the relationship between pointer values and the BPF stack, which allows local users to cause a denial of service (integer overflow or invalid memory access) or possibly have unspecified other impact.

From the Ubuntu Security Team

Jann Horn discovered that the Berkeley Packet Filter (BPF) implementation in the Linux kernel did not properly check the relationship between pointer values and the BPF stack. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Notes

AuthorNote
tyhicks
This addresses an issue in the 4.9 stable tree

Priority

High

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
linux-azure
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Not vulnerable

xenial Not vulnerable

zesty Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Does not exist

xenial Not vulnerable

zesty Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Does not exist

xenial Not vulnerable

zesty Does not exist

linux-gke
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Does not exist

xenial Not vulnerable

zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Does not exist

xenial Not vulnerable

zesty Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Does not exist

xenial Not vulnerable

zesty Does not exist

linux-oem
Launchpad, Ubuntu, Debian
upstream Not vulnerable

artful Does not exist

trusty Does not exist

xenial Not vulnerable

zesty Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
zesty Not vulnerable

artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

xenial Not vulnerable

linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Not vulnerable

upstream Not vulnerable

xenial Not vulnerable

zesty Does not exist

linux
Launchpad, Ubuntu, Debian
artful Not vulnerable

trusty Not vulnerable

upstream Not vulnerable

xenial Not vulnerable

zesty Not vulnerable

Patches:
Introduced by

7bca0a9702edfc8d0e7e46f984ca422ffdbe0498

Fixed by 37435f7e80ef9adc32a69013c18f135e3f434244
linux-armadaxp
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

xenial Ignored
(abandoned)
zesty Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable

zesty Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Ignored
(end of life, was needs-triage)
upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream Not vulnerable

xenial Does not exist

zesty Does not exist

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

trusty Not vulnerable

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-mako
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

xenial Ignored
(abandoned)
zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable

zesty Not vulnerable

linux-snapdragon
Launchpad, Ubuntu, Debian
artful Not vulnerable

trusty Does not exist

upstream Not vulnerable

xenial Not vulnerable

zesty Not vulnerable

linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

trusty Does not exist

upstream Not vulnerable

xenial Does not exist

zesty Does not exist

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H