Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2 usb num_connectors state issue

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2. This issue affects some unknown processing of the component usb. The manipulation of the argument num_connectors leads to state issue. This vulnerability is documented as CVE-2025-71108. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.159/6.6.119/6.12.63/6.18.2. It has been rated as critical. This issue affects some unknown processing of the component usb. The manipulation of the argument num_connectors with an unknown input leads to a state issue vulnerability. Using CWE to declare the problem leads to CWE-371. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: Handle incorrect num_connectors capability The UCSI spec states that the num_connectors field is 7 bits, and the 8th bit is reserved and should be set to zero. Some buggy FW has been known to set this bit, and it can lead to a system not booting. Flag that the FW is not behaving correctly, and auto-fix the value so that the system boots correctly. Found on Lenovo P1 G8 during Linux enablement program. The FW will be fixed, but seemed worth addressing in case it hit platforms that aren't officially Linux supported.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2025-71108 since 01/13/2026. 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 03/31/2026).

The vulnerability scanner Nessus provides a plugin with the ID 298924 (SUSE SLES12 : Recommended update for initial livepatch (SUSE-SU-2026:0473-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.160, 6.6.120, 6.12.64, 6.18.3 or 6.19-rc1 eliminates this vulnerability. Applying the patch f72f97d0aee4a993a35f2496bca5efd24827235d/914605b0de8128434eafc9582445306830748b93/3042a57a8e8bce4a3100c3f6f03dc372aab24943/132fe187e0d940f388f839fe2cde9b84106ad20d/30cd2cb1abf4c4acdb1ddb468c946f68939819fb 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 (298924) and CERT Bund (WID-SEC-2026-0119). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel

Productinfo

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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

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

Exploitinginfo

Class: State issue
CWE: CWE-371
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: 298924
Nessus Name: SUSE SLES12 : Recommended update for initial livepatch (SUSE-SU-2026:0473-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.160/6.6.120/6.12.64/6.18.3/6.19-rc1
Patch: f72f97d0aee4a993a35f2496bca5efd24827235d/914605b0de8128434eafc9582445306830748b93/3042a57a8e8bce4a3100c3f6f03dc372aab24943/132fe187e0d940f388f839fe2cde9b84106ad20d/30cd2cb1abf4c4acdb1ddb468c946f68939819fb

Timelineinfo

01/13/2026 CVE reserved
01/14/2026 +1 days Advisory disclosed
01/14/2026 +0 days VulDB entry created
03/31/2026 +76 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-71108 (🔒)
GCVE (CVE): GCVE-0-2025-71108
GCVE (VulDB): GCVE-100-341081
CERT Bund: WID-SEC-2026-0119 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 01/14/2026 17:40
Updated: 03/31/2026 19:44
Changes: 01/14/2026 17:40 (59), 01/16/2026 03:15 (7), 02/14/2026 21:27 (2), 03/09/2026 04:05 (1), 03/25/2026 21:51 (10), 03/31/2026 19:44 (1)
Complete: 🔍
Cache ID: 216:3BA:103

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