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.
Fix
Patch, vendor advisory and mitigation references on NVD 7
- https://git.kernel.org/stable/c/07c8d2a109d847775b3b4e2c3294c8e1eea75432 Patch
- https://git.kernel.org/stable/c/132fe187e0d940f388f839fe2cde9b84106ad20d Patch
- https://git.kernel.org/stable/c/3042a57a8e8bce4a3100c3f6f03dc372aab24943 Patch
- https://git.kernel.org/stable/c/30cd2cb1abf4c4acdb1ddb468c946f68939819fb Patch
- https://git.kernel.org/stable/c/58941bbb0050e365a98c64f1fc4a9a0ac127dba6 Patch
- https://git.kernel.org/stable/c/914605b0de8128434eafc9582445306830748b93 Patch
- https://git.kernel.org/stable/c/f72f97d0aee4a993a35f2496bca5efd24827235d Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.5 · linuxNVD modified 2026-10-19 19:17
Affected (CPE criteria) 10
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:4.13:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*
References 7
- https://git.kernel.org/stable/c/07c8d2a109d847775b3b4e2c3294c8e1eea75432 Patch
- https://git.kernel.org/stable/c/132fe187e0d940f388f839fe2cde9b84106ad20d Patch
- https://git.kernel.org/stable/c/3042a57a8e8bce4a3100c3f6f03dc372aab24943 Patch
- https://git.kernel.org/stable/c/30cd2cb1abf4c4acdb1ddb468c946f68939819fb Patch
- https://git.kernel.org/stable/c/58941bbb0050e365a98c64f1fc4a9a0ac127dba6 Patch
- https://git.kernel.org/stable/c/914605b0de8128434eafc9582445306830748b93 Patch
- https://git.kernel.org/stable/c/f72f97d0aee4a993a35f2496bca5efd24827235d Patch