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Security Advisory - Integer Overflow Vulnerability in the Linux Kernel (SACK Panic)

  • SA No:huawei-sa-20191225-01-kernel
  • Initial Release Date: Dec 26, 2019
  • Last Release Date: Feb 12, 2020

An integer overflow vulnerability was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment (SACK) segments. A remote attacker could use this to cause a denial of service. (Vulnerability ID: HWPSIRT-2019-06130)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-11477.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191225-01-kernel-en


Product Name

Affected Version

Resolved Product and Version

AC6605

V200R009C00

Upgrade to V200R019C00

V200R010C00

ALP-AL00B

Versions earlier than 9.1.0.333(C00E333R2P1T8)

9.1.0.333(C00E333R2P1T8)

BLA-AL00B

Versions earlier than 9.1.0.333(C00E333R2P1T8)

9.1.0.333(C00E333R2P1T8)

Berkeley-AL20

Versions earlier than 9.1.0.333(C00E333R2P1T8)

9.1.0.333(C00E333R2P1T8)

C30

V300R019C60

V300R019C60SPC100

Columbia-AL00A

Versions earlier than 9.1.0.333(C00E333R1P1T8)

9.1.0.333(C00E333R1P1T8)

Columbia-L29D

8.1.0.146(C461)

Upgrade to 9.1.0.350(C461E3R1P11T8)

8.1.0.148(C185)

Upgrade to 9.1.0.350(C185E3R1P12T8)

8.1.0.151(C10)

Upgrade to 9.1.0.350(C10E5R1P14T8)

8.1.0.151(C432)

Upgrade to 9.1.0.351(C432E5R1P13T8)

ELLE-AL00B

9.1.0.106D(C735E106R1P11)

Upgrade to 9.1.0.222(C00E220R2P1)

9.1.0.109(C00E106R1P21)

9.1.0.113(C00E110R1P21)

9.1.0.125(C00E120R1P21)

9.1.0.125D(C735E120R1P11)

9.1.0.135(C00E130R1P21)

9.1.0.153(C00E150R1P21)

9.1.0.153D(C735E153R1P11)

9.1.0.155(C00E150R1P21)

9.1.0.162(C00E160R2P1)

Emily-AL00A

8.1.0.190(C00)

Upgrade to 9.1.0.333(C00E333R1P1T8)

Florida-L21

Versions earlier than 9.1.0.115(C432E5R1P1T8)

9.1.0.115(C432E5R1P1T8)

Versions earlier than 9.1.0.120(C185E5R1P4T8)

9.1.0.120(C185E5R1P4T8)

Florida-L22

Versions earlier than 9.1.0.120(C636E5R1P1T8)

9.1.0.120(C636E5R1P1T8)

Florida-L23

Versions earlier than 9.1.0.121(C605E5R1P1T8)

9.1.0.121(C605E5R1P1T8)

FusionSphere OpenStack

V100R006C00RC1

6.5.1[1]

V100R006C00U1

V100R006C10

V100R006C10RC1B060

V100R006C10SPC002B010

V100R006C10SPC110

V100R006C10SPC200B030

V100R006C10SPC500

V100R006C10SPC600

HUAWEI Mate 20 X (5G)

Versions earlier than 9.1.1.205(C00E205R2P6)

9.1.1.205(C00E205R2P6)

HUAWEI P smart 2019

Versions earlier than 9.1.0.291(C185E8R4P1)

9.1.0.291(C185E8R4P1)

HUAWEI P20 Pro

Versions earlier than 9.1.0.333(C00E333R1P1T8)

9.1.0.333(C00E333R1P1T8)

HUAWEI P30 Pro

Versions earlier than 9.1.0.213(C00E210R2P1)

9.1.0.213(C00E210R2P1)

HUAWEI Y7 2019

Versions earlier than 8.2.0.150(C432CUSTC432D1)

8.2.0.150(C432CUSTC432D1)

HUAWEI Y7 Prime 2019

Versions earlier than 8.2.0.147(C185CUSTC185D1)

8.2.0.147(C185CUSTC185D1)

HUAWEI nova lite 3

Versions earlier than 9.1.0.305(C635E8R2P2)

9.1.0.305(C635E8R2P2)

Honor 10 Lite

Versions earlier than 9.1.0.280(C185E8R4P1)

9.1.0.280(C185E8R4P1)

Honor 8A

Versions earlier than 9.1.0.234(C636E4R4P1)

9.1.0.234(C636E4R4P1)

Leland-AL10B

Versions earlier than 9.1.0.113(C00E111R2P10T8)

9.1.0.113(C00E111R2P10T8)

Leland-L21A

Versions earlier than 9.1.0.118(C185E4R1P4T8)

9.1.0.118(C185E4R1P4T8)

Leland-L22C

Versions earlier than 9.1.0.118(C636E4R1P1T8)

9.1.0.118(C636E4R1P1T8)

OceanStor 5300 V3

V300R006C50SPC100

V300R006C50SPH106

V300R006C60

V300R006C60SPH001

OceanStor 5500 V3

V300R006C50SPC100

V300R006C50SPH106

V300R006C60

V300R006C60SPH001

OceanStor 5600 V3

V300R006C50SPC100

V300R006C50SPH106

V300R006C60

V300R006C60SPH001

OceanStor 5800 V3

V300R006C50SPC100

V300R006C50SPH106

V300R006C60

V300R006C60SPH001

OceanStor 6800 V3

V300R006C50SPC100

V300R006C50SPH106

V300R006C60

V300R006C60SPH001

OceanStor 9000

V300R006C00SPC001

OceanStor 9000 V5 7.0.T8

V300R006C10

Sydney-AL00

Versions earlier than 9.1.0.228(C00E78R1P7T8)

9.1.0.228(C00E78R1P7T8)

Sydney-AL00BR

Versions earlier than 9.1.0.228(C00E78R1P7T8)

Sydney-AL00 9.1.0.228(C00E78R1P7T8)

SydneyM-AL00

Versions earlier than 9.1.0.228(C00E78R1P7T8)

9.1.0.228(C00E78R1P7T8)

iManager NetEco 6000

V600R008C00

Upgrade to iManager NetEco V600R009C10SPC200

V600R008C10SPC300

V600R008C20

Notes: 

[1] If the upgrade cannot be performed due to other reasons such as hardware resource limitation, contact HUAWEI CLOUD Stack technical support engineers for independent evaluation. EOX Announcement: https://support.huawei.com/enterprise/en/bulletins-product/ENEWS2000004347

A remote attacker could exploit this vulnerability to cause a denial of service.


The vulnerability classification has been performed by using the CVSSv3 scoring system (http://www.first.org/cvss/specification-document).

Base Score: 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Temporal Score: 7.0 (E:F/RL:O/RC:C)

This vulnerability can be exploited only when the following conditions are present:

The attacker accesses to the victim's network.

Vulnerability details:

An integer overflow vulnerability was found in the way the Linux kernel's networking subsystem processed TCP Selective Acknowledgment (SACK) segments. A remote attacker could use this to cause a denial of service.


Customers should contact Huawei TAC (Huawei Technical Assistance Center) to request the upgrades. For TAC contact information, please refer to Huawei worldwide website at http://www.huawei.com/en/psirt/report-vulnerabilities.

This vulnerability was disclosed by Netflix researcher Jonathan Looney.


2020-02-12 V1.2 UPDATED Updated the "Software Versions and Fixes" section;

2020-01-02 V1.1 UPDATED Updated the "Software Versions and Fixes" section;

2019-12-26 V1.0 INITIAL


Huawei adheres to protecting the ultimate interests of users with best efforts and the principle of responsible disclosure and deal with product security issues through our response mechanism.

To enjoy Huawei PSIRT services and obtain Huawei product vulnerability information, please visit http://www.huawei.com/en/psirt.

To report a security vulnerability in Huawei products and solutions, please send it to PSIRT@huawei.com. For details, please visit http://www.huawei.com/en/psirt/report-vulnerabilities.

This document is provided on an "AS IS" basis and does not imply any kind of guarantee or warranty, either express or implied, including the warranties of merchantability or fitness for a particular purpose. In no event shall Huawei or any of its directly or indirectly controlled subsidiaries or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages. Your use of the document, by whatsoever means, will be totally at your own risk. Huawei is entitled to amend or update this document from time to time.