Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing opening of ttys could lead to a use-after-free

Brocade Fabric OS

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22378

01 August 2023

01 August 2023

OPEN

MEDIUM

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

CVE-2020-36557

Brocade Security Advisory ID

 BSA-2023-2061

Component

 Linux

 

 

Summary

Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.

 

Products Affected

All versions of Broade Fabric OS

 

Products Under Investigation

Brocade ASCG

 

Products Confirmed Not Affected

Brocade SANnav is not affected by this vulnerability

 

Solution

Solution provided in Brocade Fabric OS v8.2.3d, v9.1.1c, v9.2.0 and later versions

 

 

Revision History

Version

Change

Date

1.0

Initial Publication

 August 1, 2023

 

Disclaimer

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