CVE-2024-35938

Wi-Fi interruption via oversized MHI buffer allocation

Published May 19, 2024 · Updated May 11, 2026

Resource-allocation failure in the Linux kernel ath11k driver allows local users to interrupt Wi-Fi during device resume. The qca6390 MHI configuration leaves buf_len at zero, causing mhi_prepare_channel to request default 64KB contiguous buffers although QMI packets remain below 6KB. Reachability requires WCN6855 or QCA6390 hardware and highly fragmented memory where compaction or reclaim is unavailable.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource-allocation failure in the Linux kernel ath11k driver allows local users to interrupt Wi-Fi during device resume. The qca6390 MHI configuration leaves buf_len at zero, causing mhi_prepare_channel to request default 64KB contiguous buffers although QMI packets remain below 6KB. Reachability requires WCN6855 or QCA6390 hardware and highly fragmented memory where compaction or reclaim is unavailable.

The record

CVE
CVE-2024-35938
Published
May 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.6
  2. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <138fdeac75fb7512a7f9f1c3b236cd2e754af793
  3. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <1cca1bddf9ef080503c15378cecf4877f7510015
  4. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <6597a6687af54e2cb58371cf8f6ee4dd85c537de
  5. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <805a1cdde82fec00c7471a393f4bb437b2741559
  6. Affected versionversion=d5c65159f2895379e11ca13f62feabe93278985d <ae5876b3b7b2243d874e2afa099e7926122087a1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.6; version=d5c65159f2895379e11ca13f62feabe93278985d <138fdeac75fb7512a7f9f1c3b236cd2e754af793; version=d5c65159f2895379e11ca13f62feabe93278985d <1cca1bddf9ef080503c15378cecf4877f7510015; version=d5c65159f2895379e11ca13f62feabe93278985d <6597a6687af54e2cb58371cf8f6ee4dd85c537de; version=d5c65159f2895379e11ca13f62feabe93278985d <805a1cdde82fec00c7471a393f4bb437b2741559; version=d5c65159f2895379e11ca13f62feabe93278985d <ae5876b3b7b2243d874e2afa099e7926122087a1

Published CVSS scores

5.5NIST NVDCVSS: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.

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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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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