vhost: vringh: Fix copy_to_iter return value check
Priority LOW 22Published · Updated
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 2 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
In the Linux kernel, the following vulnerability has been resolved: vhost: vringh: Fix copy_to_iter return value check The return value of copy_to_iter can't be negative, check whether the copied length is equal to the requested length instead of checking for negative values.
Why it matters now
EPSS 0.00214 11th percentileScored 2026-11-07
Fix Partial Linux (Linux): 6.1.156, 6.6.112, 6.12.53 +2Red Hat: 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40056
- 2026-10-03 Alias added: GHSA-qqfp-3f8f-fv6r
References
Other 5
- https://git.kernel.org/stable/c/bd71e7e0a612740e4de5524880c7cd40293af5f7
- https://git.kernel.org/stable/c/781226e11d5bdea0d69c7b5aa3cda874093c73b8
- https://git.kernel.org/stable/c/b3a950d236e98440c07405ba597b11bce56a8050
- https://git.kernel.org/stable/c/68aac2b335d474b938d154b9c95cbc58838cb2ce
- https://git.kernel.org/stable/c/439263376c2c4e126cac0d07e4987568de4eaba5
More Linux vulnerabilities
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- TI-2021-02452 Incorrect authorization in Ubuntu linux kernel KEVCVSS 3.1HIGH 8.8
- TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
- TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
- TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
Sources
- CVE-2025-40056 · CVE Program
- CVE-2025-40056 · NVD
- FIRST EPSS
- GHSA-qqfp-3f8f-fv6r · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40056 · Red Hat security data · CC BY 4.0
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