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CVE-2017-7618

Published: 10 April 2017

crypto/ahash.c in the Linux kernel through 4.10.9 allows attackers to cause a denial of service (API operation calling its own callback, and infinite recursion) by triggering EBUSY on a full queue.

From the Ubuntu Security Team

Sabrina Dubroca discovered that the asynchronous cryptographic hash (ahash) implementation in the Linux kernel did not properly handle a full request queue. A local attacker could use this to cause a denial of service (infinite recursion).

Notes

AuthorNote
jdstrand
android kernels (flo, goldfish, grouper, maguro, mako and manta) are
not supported on the Ubuntu Touch 14.10 and earlier preview kernels
linux-lts-saucy no longer receives official support
linux-lts-quantal no longer receives official support

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Not vulnerable
(4.10.0-22.24)
precise Not vulnerable

trusty Not vulnerable

xenial
Released (4.4.0-79.100)
yakkety Ignored
(end of life)
zesty
Released (4.10.0-22.24)
Patches:
Introduced by

ab6bf4e5e5e4298e8649e635bee25542cccbfd97

Fixed by ef0579b64e93188710d48667cb5e014926af9f1b
linux-armadaxp
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Not vulnerable

trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Not vulnerable

yakkety Ignored
(end of life)
zesty Ignored
(end of life)
linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-quantal
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-saucy
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Not vulnerable

trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Ignored
(end of life)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Not vulnerable

trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
xenial
Released (4.4.0-1018.27)
yakkety Does not exist

zesty Does not exist

linux-azure
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial Not vulnerable
(4.11.0-1009.9)
yakkety Does not exist

zesty Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
zesty Does not exist

linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Not vulnerable

yakkety Ignored
(end of life)
zesty Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

trusty Does not exist

xenial Not vulnerable
(4.10.0-1004.4)
yakkety Does not exist

zesty Does not exist

linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist

xenial
Released (4.4.0-1014.14)
yakkety Does not exist

zesty Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist

xenial
Released (4.10.0-27.30~16.04.2)
yakkety Does not exist

zesty Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist

xenial
Released (4.10.0-27.30~16.04.2)
yakkety Does not exist

zesty Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

trusty Does not exist

xenial Not vulnerable
(4.4.0-1004.9)
zesty Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Ignored
(end of life, was needed)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty
Released (4.4.0-79.100~14.04.1)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Not vulnerable

yakkety Ignored
(end of life)
zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-oem
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Does not exist

trusty Does not exist

xenial Not vulnerable
(4.13.0-1008.9)
zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Not vulnerable
(4.10.0-1006.8)
precise Does not exist

trusty Does not exist

xenial
Released (4.4.0-1057.64)
yakkety Ignored
(end of life)
zesty
Released (4.10.0-1006.8)
linux-snapdragon
Launchpad, Ubuntu, Debian
upstream
Released (4.11~rc8)
artful Not vulnerable
(4.4.0-1059.63)
precise Does not exist

trusty Does not exist

xenial
Released (4.4.0-1059.63)
yakkety
Released (4.4.0-1059.63)
zesty
Released (4.4.0-1059.63)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H