Linux Kernel up to 6.13.6 rapidio rio_add_net return value

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.13.6. Affected is the function rio_add_net of the component rapidio. This manipulation causes return value. This vulnerability appears as CVE-2025-21935. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 6.13.6. Affected by this vulnerability is the function rio_add_net of the component rapidio. The manipulation with an unknown input leads to a return value vulnerability. The CWE definition for the vulnerability is CWE-252. The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: rapidio: add check for rio_add_net() in rio_scan_alloc_net() The return value of rio_add_net() should be checked. If it fails, put_device() should be called to free the memory and give up the reference initialized in rio_add_net().

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2025-21935 since 12/29/2024. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/01/2026).

The vulnerability scanner Nessus provides a plugin with the ID 234309 (Debian dsa-5900 : affs-modules-6.1.0-28-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.4.291, 5.10.235, 5.15.179, 6.1.131, 6.6.83, 6.12.19 or 6.13.7 eliminates this vulnerability. Applying the patch 6d22953c4a183d0b7fdf34d68c5debd16da6edc5/4f3509cfcc02e9d757f2714bb7dbbeec35de6fa7/181d4daaefb3bceeb2f2635ba9f3781eeda9e550/ad82be4298a89a9ae46f07128bdf3d8614bce745/e6411c3b9512dba09af7d014d474516828c89706/c332f3e2df0fcae5a45fd55cc18902fb1e4825ca/a0d069ccc475abaaa79c6368ee27fc0b5912bea8/e842f9a1edf306bf36fe2a4d847a0b0d458770de 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 (234309) and CERT Bund (WID-SEC-2025-0683). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • SolarWinds Security Event Manager
  • Dell NetWorker
  • Dell Secure Connect Gateway
  • 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: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Return value
CWE: CWE-252 / CWE-253
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 234309
Nessus Name: Debian dsa-5900 : affs-modules-6.1.0-28-4kc-malta-di - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.4.291/5.10.235/5.15.179/6.1.131/6.6.83/6.12.19/6.13.7
Patch: 6d22953c4a183d0b7fdf34d68c5debd16da6edc5/4f3509cfcc02e9d757f2714bb7dbbeec35de6fa7/181d4daaefb3bceeb2f2635ba9f3781eeda9e550/ad82be4298a89a9ae46f07128bdf3d8614bce745/e6411c3b9512dba09af7d014d474516828c89706/c332f3e2df0fcae5a45fd55cc18902fb1e4825ca/a0d069ccc475abaaa79c6368ee27fc0b5912bea8/e842f9a1edf306bf36fe2a4d847a0b0d458770de

Timelineinfo

12/29/2024 🔍
04/01/2025 +92 days 🔍
04/01/2025 +0 days 🔍
02/01/2026 +306 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-21935 (🔍)
GCVE (CVE): GCVE-0-2025-21935
GCVE (VulDB): GCVE-100-302653
CERT Bund: WID-SEC-2025-0683 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 04/01/2025 19:07
Updated: 02/01/2026 06:40
Changes: 04/01/2025 19:07 (58), 04/14/2025 15:08 (2), 07/20/2025 02:43 (7), 07/21/2025 22:42 (1), 10/26/2025 20:36 (1), 10/31/2025 00:46 (11), 02/01/2026 06:40 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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