High severity8.4NVD Advisory· Published Sep 11, 2026· Updated Oct 19, 2026
CVE-2026-89470
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- osv-coords2 versions
>= 4.20.0, < 5.10.270+ 1 more
- (no CPE)range: >= 4.20.0, < 5.10.270
- (no CPE)range: < 7.2.7-1.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60nvd
- git.kernel.org/stable/c/3262977a05b23d1be9fc86727a2b490ec997543envd
- git.kernel.org/stable/c/3ce9218639ff62d011eb8aca0943aa670a654c7bnvd
- git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701nvd
- git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309denvd
- git.kernel.org/stable/c/dce1750ddbd3380b1f6090dda2b07d2ebea2261dnvd
- git.kernel.org/stable/c/e951b65ef1699439079b723ca5c72cbe44771647nvd
- git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60acnvd
News mentions
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