Linux Kernel up to 6.6.127/6.12.74/6.18.15/6.19.5 dwc3_gadget_vbus_draw denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.6.127/6.12.74/6.18.15/6.19.5. Affected by this issue is the function dwc3_gadget_vbus_draw. Performing a manipulation results in denial of service. This vulnerability is known as CVE-2026-43170. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.6.127/6.12.74/6.18.15/6.19.5. This affects the function dwc3_gadget_vbus_draw. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Move vbus draw to workqueue context Currently dwc3_gadget_vbus_draw() can be called from atomic context, which in turn invokes power-supply-core APIs. And some these PMIC APIs have operations that may sleep, leading to kernel panic. Fix this by moving the vbus_draw into a workqueue context.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2026-43170 since 05/01/2026. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 318589 (Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50293)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.128, 6.12.75, 6.18.16 or 6.19.6 eliminates this vulnerability. Applying the patch 76c1123ffccfaba95cf4ecc2a50f95504a522424/a7a80c25b65112768eeba58a7af129d3c52a6d90/2333653ef854c2cc124077f71a8526f03bf6e06a/74a231e3d99d310497ab0ccb359539a6063b316a/54aaa3b387c2f580a99dc86a9cc2eb6dfaf599a7 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 (318589). 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: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 318589
Nessus Name: Oracle Linux 10 / 9 : Unbreakable Enterprise kernel (ELSA-2026-50293)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.128/6.12.75/6.18.16/6.19.6
Patch: 76c1123ffccfaba95cf4ecc2a50f95504a522424/a7a80c25b65112768eeba58a7af129d3c52a6d90/2333653ef854c2cc124077f71a8526f03bf6e06a/74a231e3d99d310497ab0ccb359539a6063b316a/54aaa3b387c2f580a99dc86a9cc2eb6dfaf599a7

Timelineinfo

05/01/2026 CVE reserved
05/06/2026 +5 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
06/04/2026 +29 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43170 (🔒)
GCVE (CVE): GCVE-0-2026-43170
GCVE (VulDB): GCVE-100-361395

Entryinfo

Created: 05/06/2026 16:30
Updated: 06/04/2026 14:47
Changes: 05/06/2026 16:30 (58), 06/04/2026 14:47 (2)
Complete: 🔍
Cache ID: 216::103

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

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