CVE-2025-40051

In the Linux kernel, the following vulnerability has been resolved: vhost: vringh: Modify the return value check The return value of copy_from_iter and copy_to_iter can't be negative, check whether the copied lengths are equal.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

Published

2025-10-28

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/78dc7362662fedaa1928fb8e4f27401c8322905d
• https://git.kernel.org/stable/c/82a8d0fda55b35361ee7f35b54fa2b66d7847d2b
• https://git.kernel.org/stable/c/baa37b1c7e29546f79c39bef0d18c4edc9f39bb1
• https://git.kernel.org/stable/c/cfa0654402c06d086201a9ff167eb95da5844fc3
• https://git.kernel.org/stable/c/db042925a5ab7a550b710addeadbf6f72e3a8a4b

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