use-after-free and memory corruption

Brocade Fabric OS

0 more products

36834

27 January 2026

27 January 2026

CLOSED

LOW

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

CVE-2017-18017

Brocade Security Advisory ID

 BSA-2026-2296

Component

 Linux

 

 

Summary

The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS. c in the Linux kernel before 4.11, and 4.9. x before 4.9. 36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.

Products Affected

  • No Brocade Fibre channel products from Broadcom are affected

Products Not Affected

  • Brocade Fabric OS versions before 10.0.0
    [VEX Justification: Vulnerable_code_not_in_execute_path]
  • Brocade ASCG
    [VEX Justification: Vulnerable_code_not_present]
  • Brocade SANnav
    [VEX Justification: Vulnerable_code_not_in_execute_path]

Solution

  • While Brocade Fabric OS is not affected, a security update has been provided in Brocade Fabric OS 10.0.0

 

Revision History

Version

Change

Date

1.0

Initial Publication

 January 27, 2026

 

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.