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.
References
Configurations
Configuration 1 (hide)
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History
07 May 2026, 16:02
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.8 |
| CWE | CWE-129 | |
| CPE | cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* |
|
| First Time |
Linux linux Kernel
Linux |
|
| References | () https://git.kernel.org/stable/c/98429e9ec89a5e3a204112dfaa2dbe6ca28493a0 - Patch | |
| References | () https://git.kernel.org/stable/c/d2d8c17ac01a1b1f638ea5d340a884ccc5015186 - Patch | |
| References | () https://git.kernel.org/stable/c/f4e608fe12b7ac6a4a57176ab0296bb5a110a078 - Patch | |
| References | () https://git.kernel.org/stable/c/f6dcbf2b024d55549959402f1db6c614e51d52cb - Patch |
01 May 2026, 15:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-01 15:16
Updated : 2026-05-07 16:02
NVD link : CVE-2026-31729
Mitre link : CVE-2026-31729
CVE.ORG link : CVE-2026-31729
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-129
Improper Validation of Array Index