---
id: CVE-2023-3108
title: 'Kernel: a race condition in crypto module in the function skcipher_recvmsg'
summary: >-
  A flaw was found in the subsequent get_user_pages_fast in the Linux kernel’s
  interface for symmetric key cipher algorithms in the skcipher_recvmsg of
  crypto/algif_skcipher.c function. This flaw allows a local user to crash the
  system.
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
vendor: Red Hat
product: kernel
affected:
  - kernel
  - kernel
  - kernel-rt
  - kernel
  - kernel-rt
  - kernel
  - kernel-rt
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-03-06T15:25:54.440276Z'
published: '2023-07-11'
updated: '2026-11-07'
sourceUpdated: '2026-11-07T11:32:54.362Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-3108'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2023-3108'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2221472'
    label: RHBZ#2221472
  - url: >-
      https://github.com/torvalds/linux/commit/9399f0c51489ae8c16d6559b82a452fdc1895e91
tags:
  - cve.org
epss: 0.0019
epssPercentile: 0.08712
ingestedAt: '2026-11-07T12:16:41.103Z'
---

## Overview

A flaw was found in the subsequent get_user_pages_fast in the Linux kernel’s interface for symmetric key cipher algorithms in the skcipher_recvmsg of crypto/algif_skcipher.c function. This flaw allows a local user to crash the system.

## 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.