---
id: CVE-2023-3397
title: 'Kernel: slab-use-after-free write in txend due to race condition'
summary: >-
  A race condition occurred between the functions lmLogClose and txEnd in JFS,
  in the Linux Kernel, executed in different threads. This flaw allows a local
  attacker with normal user privileges to crash the system or leak internal
  kernel in…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-416
vendor: Red Hat
product: kernel
affected:
  - kernel
  - kernel
  - kernel-rt
  - kernel
  - kernel-rt
  - kernel
  - kernel-rt
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-02-26T21:49:18.892458Z'
published: '2023-11-01'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T08:13:40.877Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-3397'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2023-3397'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2217271'
    label: RHBZ#2217271
  - url: 'https://www.spinics.net/lists/kernel/msg4788636.html'
tags:
  - cve.org
epss: 0.0021
epssPercentile: 0.11215
ingestedAt: '2026-10-31T04:17:25.424Z'
---

## Overview

A race condition occurred between the functions lmLogClose and txEnd in JFS, in the Linux Kernel, executed in different threads. This flaw allows a local attacker with normal user privileges to crash the system or leak internal kernel information.

## Affected

- `kernel`
- `kernel`
- `kernel-rt`
- `kernel`
- `kernel-rt`
- `kernel`
- `kernel-rt`

## Remediation

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

### Workarounds

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.