net ipv4 route.c has an information leak because the hash table is very small

Brocade Fabric OS

1 more products

22352

07 November 2023

01 August 2023

OPEN

MEDIUM

3.5 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVE-2021-45486

Brocade Security Advisory ID

BSA-2023-1672

Component

Linux

 

 

Summary

In the IPv4 implementation in the Linux kernel before 5.12.4,
net/ipv4/route.c has an information leak because the hash table is very small.

Impact: Successful exploitation of this vulnerability could lead to disclosure
of sensitive information.

 

Products Affected

Brocade Fabric OS v9.0 and later versions

Brocade ASCG OVA versions prior to v3.0

 

Products Confirmed Not Affected

Brocade Fabric OS versions prior to v9.0 are not affected by this vulnerability

Brocade SANnav is not affected by this vulnerability

 

Solution

Solution provided in Brocade Fabric OS v9.1.1c, v9.2.0 and later versions

Solution provided in Brocade ASCG v3.0 and later versions

 

 

 

Revision History

Version

Change

Date

1.0

Initial Publication

August 1, 2023

2.0

Added communication for ASCG

November 7, 2023

 

Disclaimer

THIS DOCUMENT IS PROVIDED ON AN AS-IS BASIS SOLELY FOR INFORMATIONAL PURPOSES AND DOES NOT IMPLY ANY KIND OF GUARANTY OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. YOUR USE OF THE INFORMATION CONTAINED HEREIN IS AT YOUR OWN RISK. ALL INFORMATION PROVIDED HEREIN IS BASED ON BROCADE'S CURRENT KNOWLEDGE AND UNDERSTANDING OF THE VULNERABILITY AND IMPACT TO BROCADE HARDWARE AND SOFTWARE PRODUCTS. BROCADE RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.