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Known Exploited Vulnerability
7.4
HIGH CVSS 3.1
CVE-2025-38352
Linux Kernel Time-of-Check Time-of-Use (TOCTOU) Race Condition Vulnerability - [Actively Exploited]
Description

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent or debugger right after unlock_task_sighand(). If a concurrent posix_cpu_timer_del() runs at that moment, it won't be able to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail. Add the tsk->exit_state check into run_posix_cpu_timers() to fix this. This fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because exit_task_work() is called before exit_notify(). But the check still makes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail anyway in this case.

INFO

Published Date :

July 22, 2025, 8:15 a.m.

Last Modified :

Sept. 5, 2025, 2:18 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Linux kernel contains a time-of-check time-of-use (TOCTOU) race condition vulnerability that has a high impact on confidentiality, integrity, and availability.

Required Action :

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes :

This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff ; https://source.android.com/docs/security/bulletin/2025-09-01 ; https://nvd.nist.gov/vuln/detail/CVE-2025-38352

Affected Products

The following products are affected by CVE-2025-38352 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Update the Linux kernel to resolve a race condition in POSIX CPU timers.
  • Update the Linux kernel to the latest version.
  • Apply the provided patch for the POSIX CPU timers.
  • Ensure CONFIG_POSIX_CPU_TIMERS_TASK_WORK is handled correctly.
Public PoC/Exploit Available at Github

CVE-2025-38352 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-38352.

URL Resource
https://git.kernel.org/stable/c/2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff Patch
https://git.kernel.org/stable/c/2f3daa04a9328220de46f0d5c919a6c0073a9f0b Patch
https://git.kernel.org/stable/c/460188bc042a3f40f72d34b9f7fc6ee66b0b757b Patch
https://git.kernel.org/stable/c/764a7a5dfda23f69919441f2eac2a83e7db6e5bb Patch
https://git.kernel.org/stable/c/78a4b8e3795b31dae58762bc091bb0f4f74a2200 Patch
https://git.kernel.org/stable/c/c076635b3a42771ace7d276de8dc3bc76ee2ba1b Patch
https://git.kernel.org/stable/c/c29d5318708e67ac13c1b6fc1007d179fb65b4d7 Patch
https://git.kernel.org/stable/c/f90fff1e152dedf52b932240ebbd670d83330eca Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-38352 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-38352 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
DevGreick/devgreick

None

Python

Updated: 1 day, 7 hours ago
1 stars 0 fork 0 watcher
Born at : Oct. 29, 2024, 8:10 p.m. This repo has been linked 11 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-38352 vulnerability anywhere in the article.

  • Daily CyberSecurity
Unlocking Real-Time Translation: Microsoft Edge’s AI Breakthrough

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Published Date: Sep 14, 2025 (21 hours, 42 minutes ago)
  • Daily CyberSecurity
FTC Probes Google, Amazon Over ‘Opaque’ Ad Practices

The U.S. Federal Trade Commission (FTC) has launched a new investigation into the online advertising practices of Google and Amazon, focusing on the transparency of their auction pricing mechanisms an ... Read more

Published Date: Sep 14, 2025 (22 hours, 18 minutes ago)
  • The Hacker News
Samsung Fixes Critical Zero-Day CVE-2025-21043 Exploited in Android Attacks

Sep 12, 2025Ravie LakshmananVulnerability / Mobile Security Samsung has released its monthly security updates for Android, including a fix for a security vulnerability that it said has been exploite ... Read more

Published Date: Sep 12, 2025 (2 days, 14 hours ago)
  • Daily CyberSecurity
Apple Issues New Spyware Alerts for French Officials and Journalists

Apple occasionally issues spyware attack notifications, publicly disclosing on its website which countries or regions have received such warnings. However, some spyware campaigns may remain undisclose ... Read more

Published Date: Sep 12, 2025 (3 days, 1 hour ago)
  • Daily CyberSecurity
CVE-2025-10127 (CVSS 9.8): Critical Daikin Flaw Could Give Hackers Full System Access

The Cybersecurity and Infrastructure Security Agency (CISA) has issued a security advisory about a critical flaw in Daikin Security Gateway devices that could allow attackers to bypass authentication ... Read more

Published Date: Sep 12, 2025 (3 days, 1 hour ago)
  • Daily CyberSecurity
CVE-2025-58754: Axios Vulnerability Puts Node.js Processes at Risk of DoS Attacks

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Published Date: Sep 12, 2025 (3 days, 2 hours ago)
  • Daily CyberSecurity
CISA Urges Immediate Patching: Critical Dassault Systèmes Flaw (CVE-2025-5086) Actively Exploited

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Published Date: Sep 12, 2025 (3 days, 2 hours ago)
  • Daily CyberSecurity
Unveiling VoidProxy: The Phishing-as-a-Service That Bypasses MFA

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Published Date: Sep 12, 2025 (3 days, 2 hours ago)
  • Daily CyberSecurity
PyInstaller Flaw : Are Your Python Apps Vulnerable to Hijacking?

The PyInstaller project has released fixes for a local privilege escalation vulnerability that affected applications packaged with versions prior to 6.0.0. Tracked as CVE-2025-59042 with a CVSS score ... Read more

Published Date: Sep 12, 2025 (3 days, 5 hours ago)
  • Daily CyberSecurity
Angular SSR Flaw (CVE-2025-59052) Exposes User Data: What Developers Need to Know

The Angular team has issued a security advisory addressing a high-severity flaw in server-side rendering (SSR) that could allow attackers to access sensitive data from unrelated requests. Tracked as C ... Read more

Published Date: Sep 11, 2025 (3 days, 18 hours ago)
  • Daily CyberSecurity
Microsoft Copilot to Be Powered by Two AIs: OpenAI and Now Anthropic

The Information has reported that Microsoft is preparing to announce, within the coming weeks, the integration of Anthropic’s latest Claude model into selected Office 365 Copilot features. This marks ... Read more

Published Date: Sep 11, 2025 (4 days ago)
  • Daily CyberSecurity
High-Severity Flaws in Sunshine for Windows Allow Privilege Escalation

The CERT Coordination Center (CERT/CC) has issued a vulnerability note warning of two critical local security flaws affecting Sunshine for Windows v2025.122.141614 and likely earlier versions. Sunshin ... Read more

Published Date: Sep 11, 2025 (4 days, 1 hour ago)
  • Daily CyberSecurity
Beyond Cobalt Strike: A New Open-Source Hacking Tool Is on the Rise

Researchers at Palo Alto Networks’ Unit 42 have published a report detailing the rise of AdaptixC2, an open-source post-exploitation and adversarial emulation framework that is increasingly being abus ... Read more

Published Date: Sep 11, 2025 (4 days, 2 hours ago)
  • Daily CyberSecurity
CVE-2025-8696: DoS Flaw in Stork UI Allows Unauthenticated Attackers to Crash Servers

The Internet Systems Consortium (ISC) has issued a security advisory addressing a high-severity flaw in Stork UI, a tool for monitoring and managing ISC DHCP and BIND installations. The vulnerability, ... Read more

Published Date: Sep 11, 2025 (4 days, 2 hours ago)
  • Daily CyberSecurity
ACSC Warns of Active Exploitation of SonicWall SSL VPN Vulnerability (CVE-2024-40766)

The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has issued an alert on the active exploitation of CVE-2024-40766, a critical vulnerability in SonicWall SSL VPNs that ... Read more

Published Date: Sep 11, 2025 (4 days, 3 hours ago)
  • Daily CyberSecurity
CVE-2025-58063: CoreDNS Vulnerability Could Disrupt DNS Updates

The CoreDNS project has disclosed a vulnerability in its etcd plugin, tracked as CVE-2025-58063 (CVSS 7.1), which could allow attackers to pin DNS cache entries for abnormally long periods, effectivel ... Read more

Published Date: Sep 11, 2025 (4 days, 4 hours ago)
  • Daily CyberSecurity
NVIDIA Patches High-Severity Vulnerabilities in NVDebug Tool

NVIDIA has released a software update for its NVDebug tool, addressing three high-severity vulnerabilities (CVE-2025-23342, CVE-2025-23343, and CVE-2025-23344) that could allow attackers to execute co ... Read more

Published Date: Sep 11, 2025 (4 days, 5 hours ago)
  • Daily CyberSecurity
Apple’s “Most Significant Upgrade” to iPhone Security Is Here

Apple Security Engineering and Architecture (SEAR) has unveiled Memory Integrity Enforcement (MIE), an always-on, hardware-assisted memory safety technology designed to block entire classes of memory ... Read more

Published Date: Sep 10, 2025 (4 days, 18 hours ago)
  • Daily CyberSecurity
The MacBook Pro Is Getting an OLED Display, But There’s a Catch

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Published Date: Sep 10, 2025 (4 days, 20 hours ago)
  • Daily CyberSecurity
Sophos Fixes Critical Authentication Bypass (CVE-2025-10159) in AP6 Series Wireless Access Points

Sophos has released a fix for a critical authentication bypass vulnerability (CVE-2025-10159) affecting its AP6 Series Wireless Access Points. The flaw, rated CVSS 9.8, could allow attackers with netw ... Read more

Published Date: Sep 10, 2025 (5 days, 2 hours ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-38352 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Sep. 05, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.36 up to (excluding) 5.4.295 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.186 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.142 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.239 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.15.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.34 *cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.94
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2f3daa04a9328220de46f0d5c919a6c0073a9f0b Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/460188bc042a3f40f72d34b9f7fc6ee66b0b757b Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/764a7a5dfda23f69919441f2eac2a83e7db6e5bb Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/78a4b8e3795b31dae58762bc091bb0f4f74a2200 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/c076635b3a42771ace7d276de8dc3bc76ee2ba1b Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/c29d5318708e67ac13c1b6fc1007d179fb65b4d7 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/f90fff1e152dedf52b932240ebbd670d83330eca Types: Patch
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Sep. 05, 2025

    Action Type Old Value New Value
    Added Date Added 2025-09-04
    Added Due Date 2025-09-25
    Added Required Action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
    Added Vulnerability Name Linux Kernel Time-of-Check Time-of-Use (TOCTOU) Race Condition Vulnerability
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 02, 2025

    Action Type Old Value New Value
    Added CWE CWE-367
    Removed CWE CWE-362
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 02, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-362
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 22, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent or debugger right after unlock_task_sighand(). If a concurrent posix_cpu_timer_del() runs at that moment, it won't be able to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail. Add the tsk->exit_state check into run_posix_cpu_timers() to fix this. This fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because exit_task_work() is called before exit_notify(). But the check still makes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail anyway in this case.
    Added Reference https://git.kernel.org/stable/c/2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff
    Added Reference https://git.kernel.org/stable/c/2f3daa04a9328220de46f0d5c919a6c0073a9f0b
    Added Reference https://git.kernel.org/stable/c/460188bc042a3f40f72d34b9f7fc6ee66b0b757b
    Added Reference https://git.kernel.org/stable/c/764a7a5dfda23f69919441f2eac2a83e7db6e5bb
    Added Reference https://git.kernel.org/stable/c/78a4b8e3795b31dae58762bc091bb0f4f74a2200
    Added Reference https://git.kernel.org/stable/c/c076635b3a42771ace7d276de8dc3bc76ee2ba1b
    Added Reference https://git.kernel.org/stable/c/c29d5318708e67ac13c1b6fc1007d179fb65b4d7
    Added Reference https://git.kernel.org/stable/c/f90fff1e152dedf52b932240ebbd670d83330eca
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 7.4
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact