Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak
Key facts
- Attack vector
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- 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: 5 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: Input: uinput - zero-initialize uinput_ff_upload_compat to avoid info leak Struct ff_effect_compat is embedded twice inside uinput_ff_upload_compat, contains internal padding. In particular, there is a hole after struct ff_replay to satisfy alignment requirements for the following union member. Without clearing the structure, copy_to_user() may leak stack data to userspace. Initialize ff_up_compat to zero before filling valid fields.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.29 and later | 5.4.301, 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.29 and later Fixed in 5.4.301, 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.4.301, 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-40035
- 2026-10-03 Alias added: GHSA-8c35-rp3g-c86r
References
Other 8
- https://git.kernel.org/stable/c/1b317796013f666ae5040edbf0f230ec61496d42
- https://git.kernel.org/stable/c/877172b97786ed1678640dff0b2d35abb328844c
- https://git.kernel.org/stable/c/e63aade22a33e77b93c98c9f02db504d897a76b4
- https://git.kernel.org/stable/c/933b87c4590b42500299f00ff55f555903056803
- https://git.kernel.org/stable/c/fd8a23ecbc602d00e47b27f20b07350867d0ebe5
- https://git.kernel.org/stable/c/48c96b7e9e03516936d6deba54b5553097eae817
- https://git.kernel.org/stable/c/f5e1f3b85aadce74268c46676772c3e9fa79897e
- https://git.kernel.org/stable/c/d3366a04770eea807f2826cbdb96934dd8c9bf79
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- 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-2025-40035 · CVE Program
- CVE-2025-40035 · NVD
- FIRST EPSS
- GHSA-8c35-rp3g-c86r · GitHub Advisory Database · CC BY 4.0
- CVE-2025-40035 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences