High 7.8Published Oct 28, 2025

CVE-2025-40051vhost: vringh: Modify the return value check

Updated under an hour ago (Oct 27, 2026, 11:10 PM ET)

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Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 309bba39c945ac8ab8083ac05cd6cfe5822968e0 before db042925a5ab7a550b710addeadbf6f72e3a8a4b; 309bba39c945ac8ab8083ac05cd6cfe5822968e0 builds before 78dc7362662fedaa1928fb8e4f27401c8322905d; from 309bba39c945ac8ab8083ac05cd6cfe5822968e0 before baa37b1c7e29546f79c39bef0d18c4edc9f39bb1; from 309bba39c945ac8ab8083ac05cd6cfe5822968e0 before cfa0654402c06d086201a9ff167eb95da5844fc3; 309bba39c945ac8ab8083ac05cd6cfe5822968e0 builds before 82a8d0fda55b35361ee7f35b54fa2b66d7847d2b	CNA record

References

References

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

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.