Linux Kernel up to 6.10.1 filelock race condition

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.10.1. This vulnerability affects unknown code of the component filelock. Performing a manipulation results in race condition. This vulnerability is cataloged as CVE-2024-41020. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 6.10.1. This affects some unknown processing of the component filelock. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: filelock: Fix fcntl/close race recovery compat path When I wrote commit 3cad1bc01041 ("filelock: Remove locks reliably when fcntl/close race is detected"), I missed that there are two copies of the code I was patching: The normal version, and the version for 64-bit offsets on 32-bit kernels. Thanks to Greg KH for stumbling over this while doing the stable backport... Apply exactly the same fix to the compat path for 32-bit kernels.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-41020 since 07/12/2024. The exploitability is told to be difficult. Technical details are unknown but a public exploit is available.

The exploit is shared for download at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 207884 (openSUSE 15 Security Update : kernel (SUSE-SU-2024:3483-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.19.319, 5.4.281, 5.10.223, 5.15.164, 6.1.102, 6.6.43, 6.9.12 or 6.10.2 eliminates this vulnerability. Applying the patch a561145f3ae9/4c43ad4ab416/911cc83e56a2/53e21cfa68a7/f4d0775c6e2f/73ae349534eb/5b0af8e4c70e/ed898f9ca3fa/f8138f2ad2f7 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (207884) and CERT Bund (WID-SEC-2024-1722). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • IBM InfoSphere Guardium
  • Oracle Linux
  • NetApp FAS
  • NetApp ActiveIQ Unified Manager
  • Siemens SIMATIC S7
  • Oracle VM
  • IBM Security Guardium
  • RESF Rocky Linux
  • Broadcom Brocade SANnav
  • Dell PowerScale
  • Open Source Linux Kernel
  • IBM QRadar SIEM
  • Dell integrated Dell Remote Access Controller
  • Dell Avamar
  • IBM Storage Scale
  • IBM Spectrum Protect Plus
  • Juniper Junos Space
  • IBM Storage Scale System
  • SolarWinds Security Event Manager
  • Dell PowerProtect Data Domain
  • Dell PowerProtect Data Domain Management Center
  • Dell PowerProtect Data Domain OS

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.6
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 207884
Nessus Name: openSUSE 15 Security Update : kernel (SUSE-SU-2024:3483-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.19.319/5.4.281/5.10.223/5.15.164/6.1.102/6.6.43/6.9.12/6.10.2
Patch: a561145f3ae9/4c43ad4ab416/911cc83e56a2/53e21cfa68a7/f4d0775c6e2f/73ae349534eb/5b0af8e4c70e/ed898f9ca3fa/f8138f2ad2f7

Timelineinfo

07/12/2024 🔍
07/29/2024 +17 days 🔍
07/29/2024 +0 days 🔍
09/25/2025 +423 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2024-41020 (🔍)
GCVE (CVE): GCVE-0-2024-41020
GCVE (VulDB): GCVE-100-272649
CERT Bund: WID-SEC-2024-1722 - Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/29/2024 16:57
Updated: 09/25/2025 22:24
Changes: 07/29/2024 16:57 (57), 07/30/2024 16:20 (1), 08/27/2024 18:45 (11), 09/29/2024 01:52 (2), 07/15/2025 11:02 (7), 07/18/2025 19:17 (1), 09/01/2025 21:23 (1), 09/25/2025 22:24 (9)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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