CVE-2024-27052

Kernel memory corruption via uncanceled rtl8xxxu work

Published May 1, 2024 · Updated Aug 5, 2026

Use-after-free in the rtl8xxxu Wi-Fi driver in Linux allows local users to corrupt kernel memory during device teardown. rtl8xxxu_stop() frees driver state without synchronously canceling c2hcmd_work, so queued work can access the released rtl8xxxu_priv object. Exploitation requires an affected Realtek USB wireless device and a local action that stops or unbinds the driver; the race can disclose or alter kernel memory or crash the system.

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

What happened

Use-after-free in the rtl8xxxu Wi-Fi driver in Linux allows local users to corrupt kernel memory during device teardown. rtl8xxxu_stop() frees driver state without synchronously canceling c2hcmd_work, so queued work can access the released rtl8xxxu_priv object. Exploitation requires an affected Realtek USB wireless device and a local action that stops or unbinds the driver; the race can disclose or alter kernel memory or crash the system.

The record

CVE
CVE-2024-27052
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-416, CWE-20, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 1, 2024CVE 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

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Is a vulnerable build present?

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

  1. Affected versionversion=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=5.5; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <1213acb478a7181cd73eeaf00db430f1e45b1361; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <156012667b85ca7305cb363790d3ae8519a6f41e; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <3518cea837de4d106efa84ddac18a07b6de1384e; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <58fe3bbddfec10c6b216096d8c0e517cd8463e3a; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <7059cdb69f8e1a2707dd1e2f363348b507ed7707; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <ac512507ac89c01ed6cd4ca53032f52cdb23ea59; version=e542e66b7c2ee2adeefdbb7f259f2f60cadf2819 <dddedfa3b29a63c2ca4336663806a6128b8545b4
The Linux Kernel Organization · Linux Kernelversion=5.5; version=e542e66b7c2e <58fe3bbddfec

Published CVSS scores

7.4CISA ADP VulnrichmentCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
5.5Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.8Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8Linux kernel CNACVSS: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

CWE-416Use After Free
CWE-20Improper Input Validation
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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