SB20260816446 - Use-after-free in Linux kernel target driver

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Main Vulnerability Database SB20260816446

SB20260816446 - Use-after-free in Linux kernel target driver

Published: August 16, 2026

Security Bulletin ID SB20260816446
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Use-after-free (CVE-ID: CVE-2026-72083)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to a use-after-free in core_scsi3_emulate_pro_register_and_move() when processing a crafted iSCSI TransportID in a PERSISTENT RESERVE OUT REGISTER AND MOVE parameter list. A remote user can send a specially crafted request to cause a denial of service.

The issue is triggered when the parameter list spans more than one page, causing the ISID pointer to reference an unmapped region after the buffer is torn down.


Remediation

Install update from vendor's website.

References