CVE-2025-40031

Not scored yetLast modified Oct 19, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

tee: fix register_shm_helper()

In register_shm_helper(), fix incorrect error handling for a call to iov_iter_extract_pages(). A case is missing for when iov_iter_extract_pages() only got some pages and return a number larger than 0, but not the requested amount.

This fixes a possible NULL pointer dereference following a bad input from ioctl(TEE_IOC_SHM_REGISTER) where parts of the buffer isn't mapped.

Metrics

No CVSS score has been published yet.

Affected software

No affected versions have been published.

Timeline

Published
Oct 28, 2025
Last modified
Oct 19, 2026
NVD status
Deferred

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CVE-2025-40031: Unscored | Vulnix