CVE-2026-99060

Kernel crash via uninitialized monitor-transmit queue

Published Oct 23, 2026 · Updated Oct 23, 2026

A NULL dereference in Linux's mt7603 Wi-Fi driver allows local users to crash the kernel via monitor-interface packet injection. The mt7603_mac_init() function publishes the driver-private global WCID without initializing its queues, so mt76_tx() passes an uninitialized queue to __skb_queue_tail(), which dereferences a NULL previous pointer. Triggering requires an affected MT7603 device and permission to inject frames through a monitor interface; the disclosed consequence is a kernel crash, not code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Nov 1, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A NULL dereference in Linux's mt7603 Wi-Fi driver allows local users to crash the kernel via monitor-interface packet injection. The mt7603_mac_init() function publishes the driver-private global WCID without initializing its queues, so mt76_tx() passes an uninitialized queue to __skb_queue_tail(), which dereferences a NULL previous pointer. Triggering requires an affected MT7603 device and permission to inject frames through a monitor interface; the disclosed consequence is a kernel crash, not code execution.

The record

CVE
CVE-2026-99060
Published
Oct 23, 2026
Updated
Oct 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Oct 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 23, 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=0335c034e7265d36d956e806f33202c94a8a9860 <19d6fa087dcf242223645828b8282d4040bad168
  2. Affected versionversion=0335c034e7265d36d956e806f33202c94a8a9860 <456de496b53ae73e6e3020fec815dbdc88aa7c07
  3. Affected versionversion=0335c034e7265d36d956e806f33202c94a8a9860 <dd117d17e8aa2e89f857fb708e5b770709fb81cb
  4. Affected versionversion=0335c034e7265d36d956e806f33202c94a8a9860 <e454ec553996f21085657c96c8a605e2d89a81a6
  5. Affected versionversion=6.6.48 <6.6.160
  6. Affected versionversion=6.7
  7. Affected versionversion=d2defcddfe90b3be0cfccc2482495ab1fb759586 <99b8bd6323e6fc69615af828522878b7acb77bff

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=0335c034e7265d36d956e806f33202c94a8a9860 <19d6fa087dcf242223645828b8282d4040bad168; version=0335c034e7265d36d956e806f33202c94a8a9860 <456de496b53ae73e6e3020fec815dbdc88aa7c07; version=0335c034e7265d36d956e806f33202c94a8a9860 <dd117d17e8aa2e89f857fb708e5b770709fb81cb; version=0335c034e7265d36d956e806f33202c94a8a9860 <e454ec553996f21085657c96c8a605e2d89a81a6; version=6.6.48 <6.6.160; version=6.7; version=d2defcddfe90b3be0cfccc2482495ab1fb759586 <99b8bd6323e6fc69615af828522878b7acb77bff

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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