CVE-2025-40291
io_uring: fix regbuf vector size truncation
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix regbuf vector size truncation There is a report of io_estimate_bvec_size() truncating the calculated number of segments that leads to corruption issues. Check it doesn't overflow "int"s used later. Rough but simple, can be improved on top.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 8, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
9ef4cbbcb4ac3786a1a4164507511b76b2a572c5 < 826ce37a842633efe1bb763e4b13045d74060d72 9ef4cbbcb4ac3786a1a4164507511b76b2a572c5 < 146eb58629f45f8297e83d69e64d4eea4b28d972
Linux / Linux
6.15