CVE-2026-74725

Local privilege escalation via enic teardown race

Published Aug 22, 2026 · Updated Aug 25, 2026

Use-after-free in the enic driver in Linux allows local users to crash the kernel or escalate privileges during device removal. enic_remove() leaves tx_hang_reset schedulable while freeing the network device, so a TX timeout can queue enic_tx_hang_reset() after free_netdev(). The race requires concurrent device teardown and a watchdog TX timeout; the dangling work item can panic the kernel or access reallocated kernel memory.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Use-after-free in the enic driver in Linux allows local users to crash the kernel or escalate privileges during device removal. enic_remove() leaves tx_hang_reset schedulable while freeing the network device, so a TX timeout can queue enic_tx_hang_reset() after free_netdev(). The race requires concurrent device teardown and a watchdog TX timeout; the dangling work item can panic the kernel or access reallocated kernel memory.

The record

CVE
CVE-2026-74725
Published
Aug 22, 2026
Updated
Aug 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-364, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 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=4.4
  2. Affected versionversion=937317c7c1097aa878a5000e3aab616eb5c590c0 <4f3464fc6c1f26afc504fd525c574f2bc14c9d42
  3. Affected versionversion=937317c7c1097aa878a5000e3aab616eb5c590c0 <8619865f34fb3b130b567855382a5c4aadd522b9
  4. Affected versionversion=937317c7c1097aa878a5000e3aab616eb5c590c0 <e506e704b74748ffd0e1c92a7453ca2a959f832b
  5. Affected versionversion=937317c7c1097aa878a5000e3aab616eb5c590c0 <ec680ea4ba1bca92a767fb7e7869758bfdd886e3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.4; version=937317c7c1097aa878a5000e3aab616eb5c590c0 <4f3464fc6c1f26afc504fd525c574f2bc14c9d42; version=937317c7c1097aa878a5000e3aab616eb5c590c0 <8619865f34fb3b130b567855382a5c4aadd522b9; version=937317c7c1097aa878a5000e3aab616eb5c590c0 <e506e704b74748ffd0e1c92a7453ca2a959f832b; version=937317c7c1097aa878a5000e3aab616eb5c590c0 <ec680ea4ba1bca92a767fb7e7869758bfdd886e3

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-364Signal Handler Race Condition
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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo