Linux Kernel up to 6.19.12 USB Interface memory leak

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.19.12. Affected by this issue is some unknown functionality of the component USB Interface. The manipulation leads to memory leak. This vulnerability is traded as CVE-2026-31672. It is possible to launch the attack on the physical device. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19.12. It has been rated as critical. This issue affects some unknown functionality of the component USB Interface. The manipulation with an unknown input leads to a memory leak vulnerability. Using CWE to declare the problem leads to CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: rt2x00usb: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the USB anchor lifetime so that it is released on driver unbind.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-31672 since 03/09/2026. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 310524 (Linux Distros Unpatched Vulnerability : CVE-2026-31672), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.253, 5.15.203, 6.1.169, 6.6.135, 6.12.82, 6.18.23 or 6.19.13 eliminates this vulnerability. Applying the patch 64a457f6afbf15f984d95201a9a1e71eed3f9dd1/65518a6965d527c53013947031f26754f6a4f6af/15b233e33b35b927bd8d0044c15325564ea1ba24/1de5c76bf40e9cdeebf54662f63011fb10fa452f/b245db719bc7e57abf48bd5701662b270c3880f7/e360d15fcb1e819eef49e3d4434d8050542eed16/c99f198841b41735796e2ddfcd573783fb552eb9/25369b22223d1c56e42a0cd4ac9137349d5a898e 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 (310524) and EUVD (EUVD-2026-25565). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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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: Yes
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 310524
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-31672

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.253/5.15.203/6.1.169/6.6.135/6.12.82/6.18.23/6.19.13
Patch: 64a457f6afbf15f984d95201a9a1e71eed3f9dd1/65518a6965d527c53013947031f26754f6a4f6af/15b233e33b35b927bd8d0044c15325564ea1ba24/1de5c76bf40e9cdeebf54662f63011fb10fa452f/b245db719bc7e57abf48bd5701662b270c3880f7/e360d15fcb1e819eef49e3d4434d8050542eed16/c99f198841b41735796e2ddfcd573783fb552eb9/25369b22223d1c56e42a0cd4ac9137349d5a898e

Timelineinfo

03/09/2026 CVE reserved
04/24/2026 +45 days Advisory disclosed
04/24/2026 +0 days VulDB entry created
04/28/2026 +4 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-31672 (🔒)
GCVE (CVE): GCVE-0-2026-31672
GCVE (VulDB): GCVE-100-359459
EUVD: 🔒

Entryinfo

Created: 04/24/2026 18:58
Updated: 04/28/2026 07:23
Changes: 04/24/2026 18:58 (58), 04/24/2026 19:35 (1), 04/28/2026 07:23 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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