Description
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.
References5
- git.kernel.org/stable/c/78dc7362662fedaa1928fb8e4f27401c8322905d
- git.kernel.org/stable/c/82a8d0fda55b35361ee7f35b54fa2b66d7847d2b
- git.kernel.org/stable/c/baa37b1c7e29546f79c39bef0d18c4edc9f39bb1
- git.kernel.org/stable/c/cfa0654402c06d086201a9ff167eb95da5844fc3
- git.kernel.org/stable/c/db042925a5ab7a550b710addeadbf6f72e3a8a4b
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 10 November 2026
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.