Not yet scoredPublished Oct 28, 2025

CVE-2025-40031tee: fix register_shm_helper()

Updated under an hour ago (Oct 29, 2026, 12:23 AM ET)

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Exploited in the last 30 days

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.

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 7bdee41575919773818e525ea19e54eb817770af before 9338093db954918558677a468d32e77041c65167; 7bdee41575919773818e525ea19e54eb817770af builds before 6a7874ab814ce12003c46a92f7afc9b035c8e8e9; from 7bdee41575919773818e525ea19e54eb817770af before d5cf5b37064b1699d946e8b7ab4ac7d7d101814c	CNA record

References

References

https://git.kernel.org/stable/c/9338093db954918558677a468d32e77041c65167
https://git.kernel.org/stable/c/6a7874ab814ce12003c46a92f7afc9b035c8e8e9
https://git.kernel.org/stable/c/d5cf5b37064b1699d946e8b7ab4ac7d7d101814c

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.