usb: typec: ucsi: Handle incorrect num_connectors capability (Linux Linux)

CVE-2025-71108
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.15 % · percentile 4 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

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.

Weaknesses (CWE)

  • CWE-20 — Improper Input Validation

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 07c8d2a109d847775b3b4e2c3294c8e1eea75432 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 58941bbb0050e365a98c64f1fc4a9a0ac127dba6 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < f72f97d0aee4a993a35f2496bca5efd24827235d ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 914605b0de8128434eafc9582445306830748b93 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 3042a57a8e8bce4a3100c3f6f03dc372aab24943 ; affected c1b0bc2dabfa884dea49c02adaf3cd6b52b33d2f < 132fe187e0d940f388f839fe2cde9b84106ad20d
Linux · Linuxaffected 4.13 ; unaffected 0 < 4.13 ; unaffected 5.10.248 ≤ 5.10.* ; unaffected 5.15.198 ≤ 5.15.* ; unaffected 6.1.160 ≤ 6.1.* ; unaffected 6.6.120 ≤ 6.6.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD