CVE-2026-89470
Description
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.
How to fix
- Linux Linuxe951b65ef1699439079b723ca5c72cbe44771647, 3ce9218639ff62d011eb8aca0943aa670a654c7b, dce1750ddbd3380b1f6090dda2b07d2ebea2261d, 3262977a05b23d1be9fc86727a2b490ec997543e, fd5f289cca04ad869b34fc9ccb647670bfdb60ac, 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701, 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60, 657cd3a42e937276262c0a8ae6b01a87004309de or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < e951b65ef1699439079b723ca5c72cbe44771647, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < 3ce9218639ff62d011eb8aca0943aa670a654c7b, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < dce1750ddbd3380b1f6090dda2b07d2ebea2261d, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < 3262977a05b23d1be9fc86727a2b490ec997543e, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < fd5f289cca04ad869b34fc9ccb647670bfdb60ac, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60, 3af15cfacd1eef7f223802d49a88cae23c509183 ≤ v < 657cd3a42e937276262c0a8ae6b01a87004309de, 4.20 | e951b65ef1699439079b723ca5c72cbe44771647, 3ce9218639ff62d011eb8aca0943aa670a654c7b, dce1750ddbd3380b1f6090dda2b07d2ebea2261d, 3262977a05b23d1be9fc86727a2b490ec997543e, fd5f289cca04ad869b34fc9ccb647670bfdb60ac, 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701, 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60, 657cd3a42e937276262c0a8ae6b01a87004309de |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.