Linux Kernel up to 6.19.11 usbtmc_draw_down use after free

CVSS Meta Temp Score
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CTI Interest Score
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7.6$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.19.11 and classified as critical. This vulnerability affects the function usbtmc_draw_down. The manipulation leads to use after free. This vulnerability is documented as CVE-2026-31758. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19.11 and classified as critical. This issue affects the function usbtmc_draw_down. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: usb: usbtmc: Flush anchored URBs in usbtmc_release When calling usbtmc_release, pending anchored URBs must be flushed or killed to prevent use-after-free errors (e.g. in the HCD giveback path). Call usbtmc_draw_down() to allow anchored URBs to be completed.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-31758 since 03/09/2026. The exploitation is known to be easy. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 06/14/2026).

The vulnerability scanner Nessus provides a plugin with the ID 321065 (SUSE SLES15 Security Update : kernel (SUSE-SU-2026:2310-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22 or 6.19.12 eliminates this vulnerability. Applying the patch 959ef329071136e4335b54822fe2f607659b4569/e189d443767f7cd390c52f2e122e1fc41c7562d6/7fa8f61bab3fb75b5deba8a0f3abb74dc5068d9f/95e09b07e50290254b28b8395509473104518f8c/d13318dec0c1e0e2ac16f8ecbd522db14cea4bb1/977b632db51d231dec0bc571089a5c2402674139/d40198de50232e04c14c6e2092e896766c95ea48/8a768552f7a8276fb9e01d49773d2094ace7c8f1 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 vulnerability database at Tenable (321065). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 321065
Nessus Name: SUSE SLES15 Security Update : kernel (SUSE-SU-2026:2310-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.253/5.15.203/6.1.168/6.6.134/6.12.81/6.18.22/6.19.12
Patch: 959ef329071136e4335b54822fe2f607659b4569/e189d443767f7cd390c52f2e122e1fc41c7562d6/7fa8f61bab3fb75b5deba8a0f3abb74dc5068d9f/95e09b07e50290254b28b8395509473104518f8c/d13318dec0c1e0e2ac16f8ecbd522db14cea4bb1/977b632db51d231dec0bc571089a5c2402674139/d40198de50232e04c14c6e2092e896766c95ea48/8a768552f7a8276fb9e01d49773d2094ace7c8f1

Timelineinfo

03/09/2026 CVE reserved
05/01/2026 +52 days Advisory disclosed
05/01/2026 +0 days VulDB entry created
06/14/2026 +44 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-31758 (🔒)
GCVE (CVE): GCVE-0-2026-31758
GCVE (VulDB): GCVE-100-360671

Entryinfo

Created: 05/01/2026 17:53
Updated: 06/14/2026 23:51
Changes: 05/01/2026 17:53 (58), 06/14/2026 23:51 (2)
Complete: 🔍
Cache ID: 216::103

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