Linux Kernel up to 6.18.39/7.1.4/7.2-rc3 Wifi Ieee80211 Mle ieee80211_mle_size_ok input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$5k-$25k0.47+

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.18.39/7.1.4/7.2-rc3 and classified as very critical. The affected element is the function ieee80211_mle_size_ok of the component Wifi Ieee80211 Mle. The manipulation results in input validation. This vulnerability was named CVE-2026-68471. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Linux Kernel up to 6.18.39/7.1.4/7.2-rc3. Affected is the function ieee80211_mle_size_ok of the component Wifi Ieee80211 Mle. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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]

The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2026-68471 since 07/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/15/2026).

Upgrading to version 6.18.40, 7.1.5 or 7.2-rc4 eliminates this vulnerability. Applying the patch 90576bd6921a91eb038bffbb4b9467c2dc26aa1d/2b1589fd9a076727a73bfb39e96622a76415ad32/293baeae9b2434a3e432629d7720b5603db2d77e is able to eliminate this problem.

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Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.40/7.1.5/7.2-rc4
Patch: 90576bd6921a91eb038bffbb4b9467c2dc26aa1d/2b1589fd9a076727a73bfb39e96622a76415ad32/293baeae9b2434a3e432629d7720b5603db2d77e

Timelineinfo

07/30/2026 CVE reserved
08/15/2026 +16 days Advisory disclosed
08/15/2026 +0 days VulDB entry created
08/15/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-68471 (🔒)
GCVE (CVE): GCVE-0-2026-68471
GCVE (VulDB): GCVE-100-390198

Entryinfo

Created: 08/15/2026 08:17
Changes: 08/15/2026 08:17 (59)
Complete: 🔍
Cache ID: 216::103

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