Description
In the Linux kernel, the following vulnerability has been resolved:

wifi: ieee80211: validate MLE common info length

ieee80211_mle_common_size() uses the first common-info octet as the
common information length for all known MLE types. However,
ieee80211_mle_size_ok() only validates that octet for Basic, Probe
Request, and TDLS MLEs.

Reconfiguration MLEs also skipped the length octet when calculating the
minimum common size, and Priority Access MLEs skipped validation of the
advertised common information length.

Account for the Reconfiguration common-info length octet and validate
the advertised common information length for all known MLE types. Keep
unknown-type handling unchanged.

[remove now misleading comment]
Published: 2026-08-15
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability stems from the kernel’s Wi‑Fi stack incorrectly handling the length field of the MLE (Management Layer Element) common‑information octet. For certain MLE types the length is not validated, allowing an attacker to craft frames with an oversized or otherwise malformed length field. The kernel can then process data beyond the bounds of the supplied buffer, leading to memory corruption, crashes, or disclosure of kernel memory contents. The impact is primarily loss of integrity and availability, and potentially an escalation vector if code execution can be achieved through the corruption.

Affected Systems

All Linux kernel releases that include the ieee80211 Wi‑Fi driver are potentially affected. The vulnerability is present at the kernel level and therefore applies across all distributions and architectures that ship an unpatched Linux kernel. No specific version range was listed, indicating that any kernel family that has not applied this patch may be vulnerable.

Risk and Exploitability

The vulnerability is kernel‑level, verified to allow memory corruption. The lack of validation for several MLE types permits an attacker to send crafted frames over Wi‑Fi, potentially causing crashes or information leakage. The CVSS score of 8.8 indicates high severity, while the EPSS score of < 1% suggests a low probability of exploitation. The vulnerability is not listed in CISA KEV, indicating it has not yet been observed in the wild, but its high severity warrants immediate attention.

Generated by OpenCVE AI on August 18, 2026 at 04:08 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update the system to a Linux kernel version that includes the patch from commit 293baeae9b2434a3e432629d7720b5603db2d77e
  • After updating, reboot the device to ensure the kernel change takes effect
  • If an immediate update is not possible, disable the Wi‑Fi interface or prevent it from receiving external frames until a patch is applied

Generated by OpenCVE AI on August 18, 2026 at 04:08 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 18 Aug 2026 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Tue, 18 Aug 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-130
References
Metrics threat_severity

None

threat_severity

Moderate


Mon, 17 Aug 2026 06:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Sat, 15 Aug 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-119

Sat, 15 Aug 2026 06:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: wifi: ieee80211: validate MLE common info length ieee80211_mle_common_size() uses the first common-info octet as the common information length for all known MLE types. However, ieee80211_mle_size_ok() only validates that octet for Basic, Probe Request, and TDLS MLEs. Reconfiguration MLEs also skipped the length octet when calculating the minimum common size, and Priority Access MLEs skipped validation of the advertised common information length. Account for the Reconfiguration common-info length octet and validate the advertised common information length for all known MLE types. Keep unknown-type handling unchanged. [remove now misleading comment]
Title wifi: ieee80211: validate MLE common info length
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-17T05:39:14.035Z

Reserved: 2026-07-30T09:28:09.396Z

Link: CVE-2026-68471

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T06:20:05.433

Modified: 2026-08-17T06:17:56.513

Link: CVE-2026-68471

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-08-15T00:00:00Z

Links: CVE-2026-68471 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T04:15:04Z

Weaknesses
  • CWE-130

    Improper Handling of Length Parameter Inconsistency