CVE-2025-40031
Unknown
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedOct 28, 2025
First seenOct 28, 2025
How to fix
Update
- Linux Linux9338093db954918558677a468d32e77041c65167, 6a7874ab814ce12003c46a92f7afc9b035c8e8e9, d5cf5b37064b1699d946e8b7ab4ac7d7d101814c or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 7bdee41575919773818e525ea19e54eb817770af ≤ v < 9338093db954918558677a468d32e77041c65167, 7bdee41575919773818e525ea19e54eb817770af ≤ v < 6a7874ab814ce12003c46a92f7afc9b035c8e8e9, 7bdee41575919773818e525ea19e54eb817770af ≤ v < d5cf5b37064b1699d946e8b7ab4ac7d7d101814c, 6.8 | 9338093db954918558677a468d32e77041c65167, 6a7874ab814ce12003c46a92f7afc9b035c8e8e9, d5cf5b37064b1699d946e8b7ab4ac7d7d101814c |
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