CVE-2026-23216

HighCVSS 7.8/10Last modified Oct 19, 2026

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().

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

VendorProductVersions
LinuxLinux>= e48354ce078c079996f89d715dfa44814b4eba01, < ba684191437380a07b27666eb4e72748be1ea201; >= e48354ce078c079996f89d715dfa44814b4eba01, < 8518f072fc92921418cd9ed4268dd4f3e9a8fd75; >= e48354ce078c079996f89d715dfa44814b4eba01, < 275016a551ba1a068a3bd6171b18611726b67110; >= e48354ce078c079996f89d715dfa44814b4eba01, < 73b487d44bf4f92942629d578381f89c326ff77f; >= e48354ce078c079996f89d715dfa44814b4eba01, < 48fe983e92de2c59d143fe38362ad17ba23ec7f3; >= e48354ce078c079996f89d715dfa44814b4eba01, < 3835e49e146a4e6e7787b29465f1a23379b6ec44; >= e48354ce078c079996f89d715dfa44814b4eba01, < 9411a89e9e7135cc459178fa77a3f1d6191ae903
LinuxLinux3.1

References

Timeline

Published
Feb 18, 2026
Last modified
Oct 19, 2026
NVD status
Modified

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CVE-2026-23216: High severity, CVSS 7.8 | Vulnix