Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2017-7477

Published: 25 April 2017

Heap-based buffer overflow in drivers/net/macsec.c in the MACsec module in the Linux kernel through 4.10.12 allows attackers to cause a denial of service or possibly have unspecified other impact by leveraging the use of a MAX_SKB_FRAGS+1 size in conjunction with the NETIF_F_FRAGLIST feature, leading to an error in the skb_to_sgvec function.

From the Ubuntu Security Team

Jason Donenfeld discovered a heap overflow in the MACsec module in the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Mitigation

Blacklist the MACsec kernel module

Priority

Medium

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
precise Not vulnerable

trusty Not vulnerable

xenial Not vulnerable

yakkety
Released (4.8.0-52.55)
zesty
Released (4.10.0-21.23)
upstream
Released (4.11)
Patches:
Introduced by

c09440f7dcb304002dfced8c0fea289eb25f2da0

Fixed by 4d6fa57b4dab0d77f4d8e9d9c73d1e63f6fe8fee
Introduced by

c09440f7dcb304002dfced8c0fea289eb25f2da0

Fixed by 5294b83086cc1c35b4efeca03644cf9d12282e5b
linux-linaro-omap
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

precise Ignored
(end of life)
upstream
Released (4.11)
linux-ti-omap4
Launchpad, Ubuntu, Debian
trusty Does not exist

upstream
Released (4.11)
precise Not vulnerable

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-linaro-shared
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
upstream
Released (4.11)
trusty Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-armadaxp
Launchpad, Ubuntu, Debian
precise Not vulnerable

trusty Does not exist

upstream
Released (4.11)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-flo
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
precise Does not exist

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

zesty Does not exist

yakkety Ignored
(end of life)
linux-goldfish
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
precise Does not exist

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

linux-grouper
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
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-vexpress
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
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)
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)
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)
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)
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)
precise Does not exist

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

yakkety Does not exist

zesty Does not exist

linux-mako
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
yakkety Ignored
(end of life)
precise Does not exist

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

zesty Does not exist

linux-manta
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
precise Does not exist

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

yakkety Does not exist

zesty Does not exist

linux-aws
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
precise Does not exist

trusty Not vulnerable

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

linux-gke
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
precise Does not exist

trusty Does not exist

xenial Not vulnerable

yakkety Does not exist

zesty Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
precise Does not exist

trusty Does not exist

xenial
Released (4.8.0-52.55~16.04.1)
yakkety Does not exist

zesty Does not exist

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

trusty Does not exist

xenial
Released (4.8.0-52.55~16.04.1)
yakkety Does not exist

zesty Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
trusty Does not exist
(trusty was ignored [end of standard support])
precise Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Does not exist
(trusty was not-affected)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
upstream
Released (4.11)
trusty Does not exist
(trusty was ignored [end of standard support])
precise Does not exist

xenial Does not exist

yakkety Does not exist

zesty Does not exist

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

trusty Not vulnerable

xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
precise Ignored
(end of life)
trusty Does not exist

upstream
Released (4.11)
xenial Does not exist

yakkety Does not exist

zesty Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.11)
xenial Not vulnerable

yakkety
Released (4.8.0-1036.39)
zesty
Released (4.10.0-1005.7)
linux-snapdragon
Launchpad, Ubuntu, Debian
precise Does not exist

trusty Does not exist

upstream
Released (4.11)
xenial Not vulnerable

yakkety Not vulnerable

zesty Not vulnerable

Severity score breakdown

Parameter Value
Base score 7.0
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H