CVE-2026-64325

Kernel fault via stale channel-switch context

Published Jul 25, 2026 · Updated Jul 25, 2026

NULL-pointer dereference in Linux Kernel 6.14 through 7.1.3 allows attackers to trigger a kernel fault via a CSA beacon race. After cfg80211 queues a channel-switch callback, station teardown clears dev->new_ctx, but the mt7921 and mt7925 callbacks dereference it without a NULL check. The race requires an affected Wi-Fi driver, a channel-switch announcement, and channel-context teardown before the queued work runs; the resulting fault triggers a kernel oops.

CVSS severity5.5
Medium
EPSS probability0.14%
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 Linux Kernel 6.14 through 7.1.3 allows attackers to trigger a kernel fault via a CSA beacon race. After cfg80211 queues a channel-switch callback, station teardown clears dev->new_ctx, but the mt7921 and mt7925 callbacks dereference it without a NULL check. The race requires an affected Wi-Fi driver, a channel-switch announcement, and channel-context teardown before the queued work runs; the resulting fault triggers a kernel oops.

The record

CVE
CVE-2026-64325
Published
Jul 25, 2026
Updated
Jul 25, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 25, 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=6.14
  2. Affected versionversion=8aa2f59260eb66fc80378c158922ccb741ccc491 <351dd7d2c80d23e56dcce6faa4e62bea5b0877c7
  3. Affected versionversion=8aa2f59260eb66fc80378c158922ccb741ccc491 <77e7b127472a191e086e1e0b1b051703f33b1801

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.14; version=8aa2f59260eb66fc80378c158922ccb741ccc491 <351dd7d2c80d23e56dcce6faa4e62bea5b0877c7; version=8aa2f59260eb66fc80378c158922ccb741ccc491 <77e7b127472a191e086e1e0b1b051703f33b1801

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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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