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Security Advisory - Page-Cache Side-Channel Vulnerability

  • SA No:huawei-sa-20200115-01-pagecache
  • Initial Release Date: Jan 15, 2020
  • Last Release Date: Jan 15, 2020

There is a vlunerability in the mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13. An attacker could exploit this vulnerability to conduct a page-cache side-channel attack, allowing the attacker to view page-cache access patterns of other processes on the system. A successful exploit could allow the attacker to access sensitive information, which could be used to conduct further attacks. (Vulnerability ID: HWPSIRT-2019-01135)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2019-5489.

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-20200115-01-pagecache-en


Product Name

Affected Version

Resolved Product and Version

Emily-AL00A

8.1.0.175(C00)

Upgrade to 9.1.0.321(C00E320R1P1T8)

Hima-AL00B

Versions earlier than HMA-AL00C00B175

HMA-AL00C00B175

Sydney-L21

Versions earlier than 9.0.1.164(SP53C432E2R1P1T8)

Sydney-L21D 9.0.1.164(SP53C432E2R1P1T8)

Versions earlier than 9.1.0.213(C185E1R1P1T8)

9.1.0.213(C185E1R1P1T8)

Sydney-L21BR

Versions earlier than 9.0.1.170(SP53C185E1R1P2T8)

9.0.1.170(SP53C185E1R1P2T8)

Sydney-L22

Versions earlier than 9.1.0.248(C636E1R1P1T8)

9.1.0.248(C636E1R1P1T8)

Sydney-L22BR

Versions earlier than 9.1.0.258(C636E1R1P1T8)

9.1.0.258(C636E1R1P1T8)

SydneyM-AL00

Versions earlier than 9.1.0.228(C00E78R1P7T8)

9.1.0.228(C00E78R1P7T8)

SydneyM-L01

Versions earlier than 9.1.0.213(C185E1R1P1T8)

9.1.0.213(C185E1R1P1T8)

Versions earlier than 9.1.0.215(C432E3R1P1T8)

9.1.0.215(C432E3R1P1T8)

Versions earlier than 9.1.0.215(C782E2R1P1T8)

9.1.0.215(C782E2R1P1T8)

SydneyM-L21

Versions earlier than 9.1.0.215(C432E4R1P1T8)

9.1.0.215(C432E4R1P1T8)

Versions earlier than 9.1.0.221(C461E1R1P1T8)

9.1.0.221(C461E1R1P1T8)

SydneyM-L22

Versions earlier than 9.0.1.166(SP56C635E2R1P2T8)

9.0.1.166(SP56C635E2R1P2T8)

Versions earlier than 9.1.0.259(C185E1R1P2T8)

9.1.0.259(C185E1R1P2T8)

SydneyM-L23

Versions earlier than 9.1.0.226(C605E2R1P1T8)

9.1.0.226(C605E2R1P1T8)

Tony-AL00B

Versions earlier than 9.1.0.216(C00E214R2P1)

9.1.0.216(C00E214R2P1)


A successful exploit could allow the attacker to access sensitive information, which could be used to conduct further attacks.


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

Base Score: 5.6 (AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N) 

Temporal Score: 5.2 (E:F/RL:O/RC:C)

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

The attacker could gain access to the affected device.

Vulnerability details:

There is a vlunerability in the mincore() implementation in mm/mincore.c in the Linux kernel through 4.19.13. An attacker could exploit this vulnerability to conduct a page-cache side-channel attack, allowing the attacker to view page-cache access patterns of other processes on the system. A successful exploit could allow the attacker to access sensitive information, which could be used to conduct further attacks.


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 publicly disclosed.


2020-01-15 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.

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