Linux Kernel up to 6.19-rc3 usb_submit_urb memory leak

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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 6.19-rc3. The affected element is the function usb_submit_urb. The manipulation results in memory leak. This vulnerability is identified as CVE-2025-71154. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19-rc3. It has been classified as critical. Affected is the function usb_submit_urb. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: net: usb: rtl8150: fix memory leak on usb_submit_urb() failure In async_set_registers(), when usb_submit_urb() fails, the allocated async_req structure and URB are not freed, causing a memory leak. The completion callback async_set_reg_cb() is responsible for freeing these allocations, but it is only called after the URB is successfully submitted and completes (successfully or with error). If submission fails, the callback never runs and the memory is leaked. Fix this by freeing both the URB and the request structure in the error path when usb_submit_urb() fails.

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2025-71154 since 01/13/2026. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 296398 (Linux Distros Unpatched Vulnerability : CVE-2025-71154), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.248, 5.15.198, 6.1.160, 6.6.120, 6.12.64, 6.18.4 or 6.19-rc4 eliminates this vulnerability. Applying the patch a4e2442d3c48355a84463342f397134f149936d7/2f966186b99550e3c665dbfb87b8314e30acea02/db2244c580540306d60ce783ed340190720cd429/4bd4ea3eb326608ffc296db12c105f92dc2f2190/6492ad6439ff1a479fc94dc6052df3628faed8b6/151403e903840c9cf06754097b6732c14f26c532/12cab1191d9890097171156d06bfa8d31f1e39c8 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 (296398) and CERT Bund (WID-SEC-2026-0215). 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
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • NetApp ActiveIQ Unified Manager
  • Open Source Linux Kernel

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
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: Memory leak
CWE: CWE-401 / CWE-404
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: 296398
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-71154

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.248/5.15.198/6.1.160/6.6.120/6.12.64/6.18.4/6.19-rc4
Patch: a4e2442d3c48355a84463342f397134f149936d7/2f966186b99550e3c665dbfb87b8314e30acea02/db2244c580540306d60ce783ed340190720cd429/4bd4ea3eb326608ffc296db12c105f92dc2f2190/6492ad6439ff1a479fc94dc6052df3628faed8b6/151403e903840c9cf06754097b6732c14f26c532/12cab1191d9890097171156d06bfa8d31f1e39c8

Timelineinfo

01/13/2026 CVE reserved
01/23/2026 +10 days Advisory disclosed
01/23/2026 +0 days VulDB entry created
05/17/2026 +114 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71154 (🔒)
GCVE (CVE): GCVE-0-2025-71154
GCVE (VulDB): GCVE-100-342546
CERT Bund: WID-SEC-2026-0215 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/23/2026 16:15
Updated: 05/17/2026 19:37
Changes: 01/23/2026 16:15 (58), 01/25/2026 12:37 (2), 02/26/2026 23:51 (10), 03/02/2026 09:54 (7), 05/17/2026 19:37 (1)
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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