CVE-2024-27053

Kernel memory corruption via unprotected RCU dereference

Published May 1, 2024 · Updated Aug 5, 2026

Use-after-free in the WILC1000 Wi-Fi driver in affected Linux kernels allows physically proximate attackers to disclose kernel memory or crash systems. wilc_parse_join_bss_param dereferences bss->ies outside an RCU read-side critical section while received beacon and probe-response traffic can replace and free that object. Exploitation requires Wi-Fi radio proximity, an active WILC1000 interface, and an induced reconnect; repeated frame injection can expose kernel data or trigger an oops or panic.

CVSS severity8.8
High
EPSS probability1.64%
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 WILC1000 Wi-Fi driver in affected Linux kernels allows physically proximate attackers to disclose kernel memory or crash systems. wilc_parse_join_bss_param dereferences bss->ies outside an RCU read-side critical section while received beacon and probe-response traffic can replace and free that object. Exploitation requires Wi-Fi radio proximity, an active WILC1000 interface, and an induced reconnect; repeated frame injection can expose kernel data or trigger an oops or panic.

The record

CVE
CVE-2024-27053
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-476, T1499
Attack vector
adjacent
Privileges
unauthenticated

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 vectoradjacent
Required privilegesunauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=5.1; version=c460495ee072fc01a9b1e8d72c179510418cafac <205c50306acf58a335eb19fa84e40140f4fe814f; version=c460495ee072fc01a9b1e8d72c179510418cafac <4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce; version=c460495ee072fc01a9b1e8d72c179510418cafac <5800ec78775c0cd646f71eb9bf8402fb794807de; version=c460495ee072fc01a9b1e8d72c179510418cafac <745003b5917b610352f52fe0d11ef658d6471ec2; version=c460495ee072fc01a9b1e8d72c179510418cafac <b4bbf38c350acb6500cbe667b1e2e68f896e4b38; version=c460495ee072fc01a9b1e8d72c179510418cafac <d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2; version=c460495ee072fc01a9b1e8d72c179510418cafac <dd50d3ead6e3707bb0a5df7cc832730c93ace3a7; version=c460495ee072fc01a9b1e8d72c179510418cafac <e556006de4ea93abe2b46cba202a2556c544b8b2
The Linux Kernel Organization · Linux Kernelversion=5.1; version=c460495ee072 <205c50306acf; version=c460495ee072 <4bfd20d5f5c; version=c460495ee072 <5800ec78775c; version=c460495ee072 <745003b5917b; version=c460495ee072 <b4bbf38c350a; version=c460495ee072 <d80fc436751c; version=c460495ee072 <dd50d3ead6e3; version=c460495ee072 <e556006de4ea

Published CVSS scores

8.8Linux Kernel CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.1CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.

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No observations available

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

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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