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CVE-2025-40051

vhost: vringh: Modify the return value check

HIGH
7.8
CVSS Score
Published: October 28, 2025 at 11:48 AM UTC
Updated: October 19, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
309bba39c945ac8ab8083ac05cd6cfe5822968e06.0
Vendor states this is fixed in 78dc7362662fedaa1928fb8e4f27401c8322905d (fixed)
Vendor states this is fixed in 82a8d0fda55b35361ee7f35b54fa2b66d7847d2b (fixed)
Vendor states this is fixed in baa37b1c7e29546f79c39bef0d18c4edc9f39bb1 (fixed)
Vendor states this is fixed in cfa0654402c06d086201a9ff167eb95da5844fc3 (fixed)
Vendor states this is fixed in db042925a5ab7a550b710addeadbf6f72e3a8a4b (fixed)
Vendor states this is fixed in 6.0 (unaffected)
Vendor states this is fixed in 6.1.156 (unaffected)
Vendor states this is fixed in 6.12.53 (unaffected)
Vendor states this is fixed in 6.17.3 (unaffected)
Vendor states this is fixed in 6.18 (unaffected)
Vendor states this is fixed in 6.6.112 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusDEFERRED

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