Riskcovery

CVE-2025-40031

tee: fix register_shm_helper()

State
Published
Severity
Not scored
Published
Oct 28, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 7bdee41575919773818e525ea19e54eb817770af to before 9338093db954918558677a468d32e77041c65167Affected
  • 7bdee41575919773818e525ea19e54eb817770af to before 6a7874ab814ce12003c46a92f7afc9b035c8e8e9Affected
  • 7bdee41575919773818e525ea19e54eb817770af to before d5cf5b37064b1699d946e8b7ab4ac7d7d101814cAffected
LinuxLinux
  • 6.8Affected
  • before 6.8Not affected
  • 6.12.53 through 6.12.*Not affected
  • 6.17.3 through 6.17.*Not affected
  • 6.18 and laterNot affected

References

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