CVE-2025-71108
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.
Does this matter?
Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.14% probability · 4th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/07c8d2a109d847775b3b4e2c3294c8e1eea75432Patch
- https://git.kernel.org/stable/c/132fe187e0d940f388f839fe2cde9b84106ad20dPatch
- https://git.kernel.org/stable/c/3042a57a8e8bce4a3100c3f6f03dc372aab24943Patch
- https://git.kernel.org/stable/c/30cd2cb1abf4c4acdb1ddb468c946f68939819fbPatch
- https://git.kernel.org/stable/c/58941bbb0050e365a98c64f1fc4a9a0ac127dba6Patch
- https://git.kernel.org/stable/c/914605b0de8128434eafc9582445306830748b93Patch
- https://git.kernel.org/stable/c/f72f97d0aee4a993a35f2496bca5efd24827235dPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.