CVE-2025-40095

Local privilege escalation via stale RNDIS request free

Published Oct 30, 2025 · Updated Aug 5, 2026

Memory corruption in the Linux kernel RNDIS gadget function allows local users to escalate privileges through a failed rebind. A bind/unbind cycle leaves rndis->notify_req stale, and the failed rebind error path frees that request again before dereferencing its endpoint operations. Exploitation requires local write access to the USB gadget configfs UDC control; the same corruption can disclose or write kernel memory or panic the system.

CVSS severity7.8
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the Linux kernel RNDIS gadget function allows local users to escalate privileges through a failed rebind. A bind/unbind cycle leaves rndis->notify_req stale, and the failed rebind error path frees that request again before dereferencing its endpoint operations. Exploitation requires local write access to the USB gadget configfs UDC control; the same corruption can disclose or write kernel memory or panic the system.

The record

CVE
CVE-2025-40095
Published
Oct 30, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.6.27
  2. Affected versionversion=45fe3b8e5342cd1ce307099459c74011d8e01986 <08228941436047bdcd35a612c1aec0912a29d8cd
  3. Affected versionversion=45fe3b8e5342cd1ce307099459c74011d8e01986 <380353c3a92be7d928e6f973bd065c5b79755ac3
  4. Affected versionversion=45fe3b8e5342cd1ce307099459c74011d8e01986 <5f65c8ad8c7292ed7e3716343fcd590a51818cc3
  5. Affected versionversion=45fe3b8e5342cd1ce307099459c74011d8e01986 <a8366263b7e5b663d7fb489d3a9ba1e2600049a6
  6. Affected versionversion=45fe3b8e5342cd1ce307099459c74011d8e01986 <ef81226bb1f8b6e761cd0b53d2696e9c1bc955d1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.27; version=45fe3b8e5342cd1ce307099459c74011d8e01986 <08228941436047bdcd35a612c1aec0912a29d8cd; version=45fe3b8e5342cd1ce307099459c74011d8e01986 <380353c3a92be7d928e6f973bd065c5b79755ac3; version=45fe3b8e5342cd1ce307099459c74011d8e01986 <5f65c8ad8c7292ed7e3716343fcd590a51818cc3; version=45fe3b8e5342cd1ce307099459c74011d8e01986 <a8366263b7e5b663d7fb489d3a9ba1e2600049a6; version=45fe3b8e5342cd1ce307099459c74011d8e01986 <ef81226bb1f8b6e761cd0b53d2696e9c1bc955d1

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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