---
id: CVE-2026-23216
title: 'scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

  In iscsit_dec_conn_usage_count(), the function calls complete() while
  holding the conn->conn_u…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    ba684191437380a07b27666eb4e72748be1ea201
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    8518f072fc92921418cd9ed4268dd4f3e9a8fd75
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    275016a551ba1a068a3bd6171b18611726b67110
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    73b487d44bf4f92942629d578381f89c326ff77f
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    48fe983e92de2c59d143fe38362ad17ba23ec7f3
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    3835e49e146a4e6e7787b29465f1a23379b6ec44
  - >-
    Linux >= e48354ce078c079996f89d715dfa44814b4eba01 <
    9411a89e9e7135cc459178fa77a3f1d6191ae903
  - Linux 3.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-10T20:40:21.955601Z'
published: '2026-02-18'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T18:35:39.164Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-23216'
references:
  - url: 'https://git.kernel.org/stable/c/ba684191437380a07b27666eb4e72748be1ea201'
  - url: 'https://git.kernel.org/stable/c/8518f072fc92921418cd9ed4268dd4f3e9a8fd75'
  - url: 'https://git.kernel.org/stable/c/275016a551ba1a068a3bd6171b18611726b67110'
  - url: 'https://git.kernel.org/stable/c/73b487d44bf4f92942629d578381f89c326ff77f'
  - url: 'https://git.kernel.org/stable/c/48fe983e92de2c59d143fe38362ad17ba23ec7f3'
  - url: 'https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44'
  - url: 'https://git.kernel.org/stable/c/9411a89e9e7135cc459178fa77a3f1d6191ae903'
tags:
  - cve.org
epss: 0.00137
epssPercentile: 0.02781
ingestedAt: '2026-10-19T19:38:06.500Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

In iscsit_dec_conn_usage_count(), the function calls complete() while
holding the conn->conn_usage_lock. As soon as complete() is invoked, the
waiter (such as iscsit_close_connection()) may wake up and proceed to free
the iscsit_conn structure.

If the waiter frees the memory before the current thread reaches
spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function
attempts to release a lock within the already-freed connection structure.

Fix this by releasing the spinlock before calling complete().

## Affected

- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < ba684191437380a07b27666eb4e72748be1ea201`
- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < 8518f072fc92921418cd9ed4268dd4f3e9a8fd75`
- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < 275016a551ba1a068a3bd6171b18611726b67110`
- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < 73b487d44bf4f92942629d578381f89c326ff77f`
- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < 48fe983e92de2c59d143fe38362ad17ba23ec7f3`
- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < 3835e49e146a4e6e7787b29465f1a23379b6ec44`
- `Linux >= e48354ce078c079996f89d715dfa44814b4eba01 < 9411a89e9e7135cc459178fa77a3f1d6191ae903`
- `Linux 3.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.