CVE-2026-23193

HIGH EPSS 15.0%
Published Feb 14, 20264mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published Feb 14, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() In iscsit_dec_session_usage_count(), the function calls complete() while holding the sess->session_usage_lock. Similar to the connection usage count logic, the waiter signaled by complete() (e.g., in the session release path) may wake up and free the iscsit_session structure immediately. This creates a race condition where the current thread may attempt to execute spin_unlock_bh() on a session structure that has already been deallocated, resulting in a KASAN slab-use-after-free. To resolve this, release the session_usage_lock before calling complete() to ensure all dereferences of the sess pointer are finished before the waiter is allowed to proceed with deallocation.

CVSS Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
15.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 12

VendorProductVersionRange
linuxlinux_kernel*≥3.1  –  <5.10.250
linuxlinux_kernel*≥5.11  –  <5.15.200
linuxlinux_kernel*≥5.16  –  <6.1.163
linuxlinux_kernel*≥6.2  –  <6.6.124
linuxlinux_kernel*≥6.7  –  <6.12.70
linuxlinux_kernel*≥6.13  –  <6.18.10
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any
linuxlinux_kernel6.19any

References 7

  • git.kernel.org https://git.kernel.org/stable/c/11ebafffce31efc6abeb28c509017976fc49f1ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/11ebafffce31efc6abeb28c509017976fc49f1ca
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/2b64015550a13bcc72910be0565548d9a754d46d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/41b86a9ec037bd3435d68dd3692f0891a207e7e7
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/4530f4e4d0e6a207110b0ffed0c911bca43531a4
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/84dc6037390b8607c5551047d3970336cb51ba9a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d8dbdc146e9e9a976931b78715be2e91299049f9
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fd8b0900173307039d3a84644c2fee041a7ed4fb
    Patch