CVE-2026-64441

Kernel code execution via truncated Wi-Fi elements

Published Jul 25, 2026 · Updated Jul 25, 2026

Out-of-bounds access in affected Linux Kernel releases allows physically proximate attackers to execute kernel code via crafted Wi-Fi frames. The rtw_get_sec_ie and rtw_get_wapi_ie loops read truncated element headers and OUIs without remaining-length checks, while rtw_get_wps_attr reads an undersized WPS header and attribute fields before validating their bounds. Unauthenticated beacon or probe-response frames within Wi-Fi radio range are processed automatically, enabling kernel control-flow corruption or a host crash.

CVSS severity8.8
High
EPSS probability0.26%
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 access in affected Linux Kernel releases allows physically proximate attackers to execute kernel code via crafted Wi-Fi frames. The rtw_get_sec_ie and rtw_get_wapi_ie loops read truncated element headers and OUIs without remaining-length checks, while rtw_get_wps_attr reads an undersized WPS header and attribute fields before validating their bounds. Unauthenticated beacon or probe-response frames within Wi-Fi radio range are processed automatically, enabling kernel control-flow corruption or a host crash.

The record

CVE
CVE-2026-64441
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 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=4.12
  2. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344
  3. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <2ea1ce30ead61589214240e8d33d96310fd613e5
  4. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <4b51ee8a40fe47864197d73cc02b191de7a6b072
  5. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c
  6. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <729c4e72563bda0f1725db1db9ea08df06f41d9b
  7. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <b27ecba3196f6c14e3809595ebd69c0c2392512a
  8. Affected versionversion=554c0a3abf216c991c5ebddcdb2c08689ecd290b <efa27d487abcdec79669a60a6d94d5d6eceb7c1d

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.12; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <2ea1ce30ead61589214240e8d33d96310fd613e5; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <4b51ee8a40fe47864197d73cc02b191de7a6b072; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <729c4e72563bda0f1725db1db9ea08df06f41d9b; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <b27ecba3196f6c14e3809595ebd69c0c2392512a; version=554c0a3abf216c991c5ebddcdb2c08689ecd290b <efa27d487abcdec79669a60a6d94d5d6eceb7c1d

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 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

T1203Exploitation for Client Execution

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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