power: supply: cros_usbpd: Limit port counts to EC_USB_PD_MAX_PORTS

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-89470
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:28 UTC
Updated2026-09-11 20:19:28 UTC
DescriptionIn 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 Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 3af15cfacd1eef7f223802d49a88cae23c509183 fd5f289cca04ad869b34fc9ccb647670bfdb60ac git Not specified
CNA Linux Linux affected 3af15cfacd1eef7f223802d49a88cae23c509183 4b1f2be1e1b74a50386ba718de3d62bfcf5ee701 git Not specified
CNA Linux Linux affected 3af15cfacd1eef7f223802d49a88cae23c509183 304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60 git Not specified
CNA Linux Linux affected 3af15cfacd1eef7f223802d49a88cae23c509183 657cd3a42e937276262c0a8ae6b01a87004309de git Not specified
CNA Linux Linux affected 4.20 Not specified
CNA Linux Linux unaffected 4.20 semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/304a29ac55ba3ee6eceaf7d83d09cd9709f3bf60 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/fd5f289cca04ad869b34fc9ccb647670bfdb60ac 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4b1f2be1e1b74a50386ba718de3d62bfcf5ee701 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/657cd3a42e937276262c0a8ae6b01a87004309de 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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