CVE-2026-74323

Wireless transmission disruption via leaked transmit tokens

Published Aug 15, 2026 · Updated Aug 15, 2026

Resource leak in the mt7996 Wi-Fi transmit path in Linux 6.18 through 7.1.4 allows adjacent attackers to interrupt wireless service. The mt7996_tx_prepare_skb function returns when link_conf or link_sta lookup fails without releasing a transmit token allocated earlier in the path. Reachability requires an MT7996 PCIe wireless device; the public record does not identify the traffic that triggers either failed lookup.

CVSS severity8.8
High
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the mt7996 Wi-Fi transmit path in Linux 6.18 through 7.1.4 allows adjacent attackers to interrupt wireless service. The mt7996_tx_prepare_skb function returns when link_conf or link_sta lookup fails without releasing a transmit token allocated earlier in the path. Reachability requires an MT7996 PCIe wireless device; the public record does not identify the traffic that triggers either failed lookup.

The record

CVE
CVE-2026-74323
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-400, CWE-772
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=6.18
  2. Affected versionversion=7ef0c7ad735b0c38140259519a3f165bee2b857c <06e65d6cf80490bc0457d339595d1ed5a89e8899
  3. Affected versionversion=7ef0c7ad735b0c38140259519a3f165bee2b857c <831074096d0450308357271fc0ffd3f600a2487e
  4. Affected versionversion=7ef0c7ad735b0c38140259519a3f165bee2b857c <fa0e9aa92a7bc97fc42014c5efaaf1278fa92723

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.18; version=7ef0c7ad735b0c38140259519a3f165bee2b857c <06e65d6cf80490bc0457d339595d1ed5a89e8899; version=7ef0c7ad735b0c38140259519a3f165bee2b857c <831074096d0450308357271fc0ffd3f600a2487e; version=7ef0c7ad735b0c38140259519a3f165bee2b857c <fa0e9aa92a7bc97fc42014c5efaaf1278fa92723

Published CVSS scores

5.3Amazon LinuxCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
8.8Linux CNACVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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

CWE-400Uncontrolled Resource Consumption
CWE-772Missing Release of Resource after Effective Lifetime

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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