Linux Kernel up to 6.16.0 ksmbd resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.1.147/6.6.101/6.12.41/6.15.9/6.16.0. It has been declared as problematic. Affected by this issue is some unknown functionality of the component ksmbd. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2025-38501. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.147/6.6.101/6.12.41/6.15.9/6.16.0. It has been rated as problematic. Affected by this issue is some unknown processing of the component ksmbd. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ksmbd: limit repeated connections from clients with the same IP Repeated connections from clients with the same IP address may exhaust the max connections and prevent other normal client connections. This patch limit repeated connections from clients with the same IP.

The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2025-38501 since 04/16/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 259991 (Linux Distros Unpatched Vulnerability : CVE-2025-38501), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1 or 6.17-rc1 eliminates this vulnerability. Applying the patch cb092fc3a62972a4aa47c9fe356c2c6a01cd840b/fa1c47af4ff641cf9197ecdb1f8240cbb30389c1/7e5d91d3e6c62a9755b36f29c35288f06c3cd86b/f1ce9258bcbce2491f9f71f7882b6eed0b33ec65/6073afe64510c302b7a0683a01e32c012eff715d/e6bb9193974059ddbb0ce7763fa3882bd60d4dc3 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 (259991), EUVD (EUVD-2025-25072) and CERT Bund (WID-SEC-2025-1858). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM
  • IBM Security Verify Access

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 259991
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-38501

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.148/6.6.102/6.12.42/6.15.10/6.16.1/6.17-rc1
Patch: cb092fc3a62972a4aa47c9fe356c2c6a01cd840b/fa1c47af4ff641cf9197ecdb1f8240cbb30389c1/7e5d91d3e6c62a9755b36f29c35288f06c3cd86b/f1ce9258bcbce2491f9f71f7882b6eed0b33ec65/6073afe64510c302b7a0683a01e32c012eff715d/e6bb9193974059ddbb0ce7763fa3882bd60d4dc3

Timelineinfo

04/16/2025 CVE reserved
08/16/2025 +122 days Advisory disclosed
08/16/2025 +0 days VulDB entry created
03/17/2026 +213 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38501 (🔒)
GCVE (CVE): GCVE-0-2025-38501
GCVE (VulDB): GCVE-100-320354
EUVD: 🔒
CERT Bund: WID-SEC-2025-1858 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 08/16/2025 08:04
Updated: 03/17/2026 19:53
Changes: 08/16/2025 08:04 (58), 08/16/2025 10:16 (1), 08/19/2025 06:30 (1), 09/01/2025 06:31 (2), 09/28/2025 06:40 (7), 10/02/2025 17:51 (1), 10/12/2025 16:40 (1), 11/01/2025 18:43 (1), 11/18/2025 10:37 (1), 01/30/2026 16:39 (1), 02/13/2026 17:28 (20), 03/17/2026 19:53 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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