Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem

Brocade Fabric OS

0 more products

36837

27 January 2026

27 January 2026

CLOSED

LOW

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

CVE-2021-4148

Brocade Security Advisory ID

 BSA-2026-1828

Component

 Linux

 

 

Summary

A vulnerability was found in the Linux kernel's block_invalidatepage in fs/buffer.c in the filesystem. A missing sanity check may allow a local attacker with user privilege to cause a denial of service (DOS) problem.

Products Affected

  • No Brocade Fibre channel products from Broadcom are affected 

Products Not Affected

  • Brocade Fabric OS versions before 9.1.0
    [VEX Justification: Code_not_present]
  • Brocade Fabric OS versions 9.1.0 through 10.0.0
    [VEX Justification: Inline_mitigations_already_exist]
  • Brocade ASCG
    [VEX Justification: Code_not_present]
  • Brocade SANnav 3.0.0
    [VEX Justification: Vulnerable_code_not_in_execute_path]
  • Brocade SANnav versions before 3.0.0
    [VEX Justification: Code_not_present]

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

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