CVE-2026-68306

Kernel crash via unchecked EHT capability pointer

Published Aug 10, 2026 · Updated Aug 10, 2026

NULL-pointer dereference in the Linux kernel mt7996 Wi-Fi driver from 6.3 allows adjacent attackers to crash the host via EHT beamforming setup. mt7996_mcu_sta_bfer_eht calls mt76_connac_get_eht_phy_cap and dereferences the returned capability pointer without checking for NULL. An affected MT7996 wireless device and EHT beamforming path are required; the bounded consequence is a kernel crash, with no integrity impact published.

CVSS severity5.3
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 the Linux kernel mt7996 Wi-Fi driver from 6.3 allows adjacent attackers to crash the host via EHT beamforming setup. mt7996_mcu_sta_bfer_eht calls mt76_connac_get_eht_phy_cap and dereferences the returned capability pointer without checking for NULL. An affected MT7996 wireless device and EHT beamforming path are required; the bounded consequence is a kernel crash, with no integrity impact published.

The record

CVE
CVE-2026-68306
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
adjacent
Privileges
unauthenticated

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

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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=6.3
  2. Affected versionversion=ba01944adee9f4a71cf2879b9529057fd8de1972 <2b1882cf313ae44181146629b3578a7826c672c9
  3. Affected versionversion=ba01944adee9f4a71cf2879b9529057fd8de1972 <2fffc472bec490c8357defcee9c075ca74467352
  4. Affected versionversion=ba01944adee9f4a71cf2879b9529057fd8de1972 <3e4f848f4a620e1d77c38459e73cf3b362f7bc6b
  5. Affected versionversion=ba01944adee9f4a71cf2879b9529057fd8de1972 <45c496756c6f6df6c3aeb5b2cb996993d2f14687
  6. Affected versionversion=ba01944adee9f4a71cf2879b9529057fd8de1972 <d5628f39fccc107dca00b98a491d9848898599f7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=ba01944adee9f4a71cf2879b9529057fd8de1972 <2b1882cf313ae44181146629b3578a7826c672c9; version=ba01944adee9f4a71cf2879b9529057fd8de1972 <2fffc472bec490c8357defcee9c075ca74467352; version=ba01944adee9f4a71cf2879b9529057fd8de1972 <3e4f848f4a620e1d77c38459e73cf3b362f7bc6b; version=ba01944adee9f4a71cf2879b9529057fd8de1972 <45c496756c6f6df6c3aeb5b2cb996993d2f14687; version=ba01944adee9f4a71cf2879b9529057fd8de1972 <d5628f39fccc107dca00b98a491d9848898599f7

Published CVSS scores

5.3Amazon LinuxCVSS:3.1/AV:A/AC:H/PR:N/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.

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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

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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