CVE-2026-23216

HIGH

Linux Kernel - Use-After-Free in iscsit_dec_conn_usage_count

Title source: llm
STIX 2.1

Description

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().

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 4.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (24)
linux/Kernel 3.1.0 - 5.10.250linux
linux/Kernel 5.11.0 - 5.15.200linux
linux/Kernel 5.16.0 - 6.1.163linux
linux/Kernel 6.13.0 - 6.18.10linux
linux/Kernel 6.2.0 - 6.6.124linux
linux/Kernel 6.7.0 - 6.12.70linux
Linux/Linux < 3.1
Linux/Linux 3.1
Linux/Linux 5.10.250 - 5.10.*
Linux/Linux 5.15.200 - 5.15.*
... and 14 more
Published Feb 18, 2026
Tracked Since Feb 18, 2026