CVE-2026-68308

Local system crash via unchecked HE capability pointer

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL-pointer dereference in affected Linux kernel releases allows local users to crash systems through the mt7996 Wi-Fi driver. mt7996_mcu_bss_he_tlv() dereferences the HE capability pointer returned by mt76_connac_get_he_phy_cap() without first checking for NULL. Exploitation requires local access and an affected kernel using the MediaTek mt7996 driver; the reported consequence is a system crash.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL-pointer dereference in affected Linux kernel releases allows local users to crash systems through the mt7996 Wi-Fi driver. mt7996_mcu_bss_he_tlv() dereferences the HE capability pointer returned by mt76_connac_get_he_phy_cap() without first checking for NULL. Exploitation requires local access and an affected kernel using the MediaTek mt7996 driver; the reported consequence is a system crash.

The record

CVE
CVE-2026-68308
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=6.2
  2. Affected versionversion=98686cd21624c75a043e96812beadddf4f6f48e5 <4fd85fd2373501b7386e93a5ce4a549d7c4e64e3
  3. Affected versionversion=98686cd21624c75a043e96812beadddf4f6f48e5 <8b8a079e22ce9fc3c0d05b148ef67e4c6e576678
  4. Affected versionversion=98686cd21624c75a043e96812beadddf4f6f48e5 <8bc7167e8a86489b7cb96a69cf1fb671d6df014b
  5. Affected versionversion=98686cd21624c75a043e96812beadddf4f6f48e5 <d14238523ca4c6f5fcb54d1920eb2f8525a7711f
  6. Affected versionversion=98686cd21624c75a043e96812beadddf4f6f48e5 <e858cf6bf99880343348ff1e8c942aaff1d9d592

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.2; version=98686cd21624c75a043e96812beadddf4f6f48e5 <4fd85fd2373501b7386e93a5ce4a549d7c4e64e3; version=98686cd21624c75a043e96812beadddf4f6f48e5 <8b8a079e22ce9fc3c0d05b148ef67e4c6e576678; version=98686cd21624c75a043e96812beadddf4f6f48e5 <8bc7167e8a86489b7cb96a69cf1fb671d6df014b; version=98686cd21624c75a043e96812beadddf4f6f48e5 <d14238523ca4c6f5fcb54d1920eb2f8525a7711f; version=98686cd21624c75a043e96812beadddf4f6f48e5 <e858cf6bf99880343348ff1e8c942aaff1d9d592

Published CVSS scores

5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
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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