CVE-2023-53614

Local service interruption via KSM teardown race

Published Oct 4, 2025 · Updated Oct 4, 2025

Race condition in Linux kernel KSM 6.1 through 6.2.8 and 6.3-rc1 through 6.3-rc3 allows local users to interrupt service. KSM takes mmap_lock for reading and iterates a maple tree after exit_mmap() can destroy that tree, without rechecking ksm_test_exit(). A local low-privileged user must win a high-complexity race; the published record identifies no data disclosure or modification.

CVSS severity4.7
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Linux kernel KSM 6.1 through 6.2.8 and 6.3-rc1 through 6.3-rc3 allows local users to interrupt service. KSM takes mmap_lock for reading and iterates a maple tree after exit_mmap() can destroy that tree, without rechecking ksm_test_exit(). A local low-privileged user must win a high-complexity race; the published record identifies no data disclosure or modification.

The record

CVE
CVE-2023-53614
Published
Oct 4, 2025
Updated
Oct 4, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-362, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1
  2. Affected versionversion=a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 <286b0cab31bac29960e5684f6fb331d42f03b363
  3. Affected versionversion=a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 <6db504ce55bdbc575723938fc480713c9183f6a2
  4. Affected versionversion=a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 <b4f664ffd8f78c05a1fd542a28bc5a11e994c014

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.1; version=a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 <286b0cab31bac29960e5684f6fb331d42f03b363; version=a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 <6db504ce55bdbc575723938fc480713c9183f6a2; version=a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 <b4f664ffd8f78c05a1fd542a28bc5a11e994c014

Published CVSS scores

4.7NIST NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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