CVE-2026-31729None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: validate connector number in ucsi_notify_common() The connector number extracted from CCI via UCSI_CCI_CONNECTOR() is a 7-bit field (0-127) that is u…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: ucsi: validate connector number in ucsi_notify_common()
The connector number extracted from CCI via UCSI_CCI_CONNECTOR() is a 7-bit field (0-127) that is used to index into the connector array in ucsi_connector_change(). However, the array is only allocated for the number of connectors reported by the device (typically 2-4 entries).
A malicious or malfunctioning device could report an out-of-range connector number in the CCI, causing an out-of-bounds array access in ucsi_connector_change().
Add a bounds check in ucsi_notify_common(), the central point where CCI is parsed after arriving from hardware, so that bogus connector numbers are rejected before they propagate further.
Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < f6dcbf2b024d55549959402f1db6c614e51d52cbLinux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < f4e608fe12b7ac6a4a57176ab0296bb5a110a078Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 98429e9ec89a5e3a204112dfaa2dbe6ca28493a0Linux >= bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < d2d8c17ac01a1b1f638ea5d340a884ccc5015186Linux 5.5Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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