CVE-2025-71108
usb: typec: ucsi: Handle incorrect num_connectors capability
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jan 14, 2026 |
| Last Updated | May 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new unknown vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Linux / Linux
c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 07c8d2a109d847775b3b4e2c3294c8e1eea75432 c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 58941bbb0050e365a98c64f1fc4a9a0ac127dba6 c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < f72f97d0aee4a993a35f2496bca5efd24827235d c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 914605b0de8128434eafc9582445306830748b93 c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 3042a57a8e8bce4a3100c3f6f03dc372aab24943 c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 132fe187e0d940f388f839fe2cde9b84106ad20d c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 30cd2cb1abf4c4acdb1ddb468c946f68939819fb
Linux / Linux
4.13
References
git.kernel.org: https://git.kernel.org/stable/c/07c8d2a109d847775b3b4e2c3294c8e1eea75432 git.kernel.org: https://git.kernel.org/stable/c/58941bbb0050e365a98c64f1fc4a9a0ac127dba6 git.kernel.org: https://git.kernel.org/stable/c/f72f97d0aee4a993a35f2496bca5efd24827235d git.kernel.org: https://git.kernel.org/stable/c/914605b0de8128434eafc9582445306830748b93 git.kernel.org: https://git.kernel.org/stable/c/3042a57a8e8bce4a3100c3f6f03dc372aab24943 git.kernel.org: https://git.kernel.org/stable/c/132fe187e0d940f388f839fe2cde9b84106ad20d git.kernel.org: https://git.kernel.org/stable/c/30cd2cb1abf4c4acdb1ddb468c946f68939819fb