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CVE-2025-71108 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/132fe187e0d940f388f839fe2cde9b84106ad20d kernel.org
https://git.kernel.org/stable/c/3042a57a8e8bce4a3100c3f6f03dc372aab24943 kernel.org
https://git.kernel.org/stable/c/30cd2cb1abf4c4acdb1ddb468c946f68939819fb kernel.org
https://git.kernel.org/stable/c/914605b0de8128434eafc9582445306830748b93 kernel.org
https://git.kernel.org/stable/c/f72f97d0aee4a993a35f2496bca5efd24827235d kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-71108
NVD Published Date:
01/14/2026
NVD Last Modified:
01/14/2026
Source:
kernel.org