CVE-2026-89470
power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS
CVSS Score
8.4
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS Currently the cros_usbpd-charger driver probe iterates based on raw charger port count returned by the embedded controller. The only check is against the number of USB PD ports which the embedded controller also defines. A malicious embedded controller could return an inaccurate port count (up to 255) resulting in an out of bounds write and subsequent memory corruption. Update helper functions in cros_usbpd-charger to limit port counts to EC_USB_PD_MAX_PORTS.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
3af15cfacd1eef7f223802d49a88cae23c509183 < e951b65ef1699439079b723ca5c72cbe44771647 3af15cfacd1eef7f223802d49a88cae23c509183 < 3ce9218639ff62d011eb8aca0943aa670a654c7b 3af15cfacd1eef7f223802d49a88cae23c509183 < dce1750ddbd3380b1f6090dda2b07d2ebea2261d 3af15cfacd1eef7f223802d49a88cae23c509183 < 3262977a05b23d1be9fc86727a2b490ec997543e 3af15cfacd1eef7f223802d49a88cae23c509183 < fd5f289cca04ad869b34fc9ccb647670bfdb60ac 3af15cfacd1eef7f223802d49a88cae23c509183 < 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701 3af15cfacd1eef7f223802d49a88cae23c509183 < 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60 3af15cfacd1eef7f223802d49a88cae23c509183 < 657cd3a42e937276262c0a8ae6b01a87004309de
Linux / Linux
4.20
References
git.kernel.org: https://git.kernel.org/stable/c/e951b65ef1699439079b723ca5c72cbe44771647 git.kernel.org: https://git.kernel.org/stable/c/3ce9218639ff62d011eb8aca0943aa670a654c7b git.kernel.org: https://git.kernel.org/stable/c/dce1750ddbd3380b1f6090dda2b07d2ebea2261d git.kernel.org: https://git.kernel.org/stable/c/3262977a05b23d1be9fc86727a2b490ec997543e git.kernel.org: https://git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60ac git.kernel.org: https://git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701 git.kernel.org: https://git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60 git.kernel.org: https://git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309de