CVE-2025-68256

Kernel crash via unchecked Wi-Fi element length

Published Dec 16, 2025 · Updated Dec 16, 2025

Out-of-bounds reads in the Linux kernel rtl8723bs Wi-Fi driver allow physically proximate attackers to crash or destabilize affected systems. The rtw_get_ie() parser trusts each Information Element length byte and advances beyond the remaining frame buffer without checking that the body fits. The interface must use the RTL8723BS driver and process attacker-controlled 802.11 management frames; no authentication or user interaction is required.

CVSS severity8.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds reads in the Linux kernel rtl8723bs Wi-Fi driver allow physically proximate attackers to crash or destabilize affected systems. The rtw_get_ie() parser trusts each Information Element length byte and advances beyond the remaining frame buffer without checking that the body fits. The interface must use the RTL8723BS driver and process attacker-controlled 802.11 management frames; no authentication or user interaction is required.

The record

CVE
CVE-2025-68256
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 16, 2025Record 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <154828bf9559b9c8421fc2f0d7f7f76b3683aaed
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a54e2b2db1b7de2e008b4f62eec35aaefcc663c5
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c0d93d69e1472ba75b78898979b90a98ba2a2501
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df191dd9f4c7249d98ada55634fa8ac19089b8cb

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <154828bf9559b9c8421fc2f0d7f7f76b3683aaed; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <a54e2b2db1b7de2e008b4f62eec35aaefcc663c5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c0d93d69e1472ba75b78898979b90a98ba2a2501; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df191dd9f4c7249d98ada55634fa8ac19089b8cb

Published CVSS scores

8.8LinuxCVSS:3.1/AV:A/AC:L/PR:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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