CVE-2025-40031 | BDVDB-2026-299813 Detail

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.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12025-10-28Record published in the CVE List.
2. Version 22026-05-11Most recent update recorded in the CVE List.