CVE-2024-43847

Kernel memory corruption via shared ring mask

Published Aug 17, 2024 · Updated Aug 5, 2026

Invalid memory access in Linux kernel ath12k allows adjacent attackers to corrupt kernel memory via fragmented Wi-Fi packets. The monitor and REO reinject rings share a mask index, so an REO reinject interrupt incorrectly processes the disabled monitor ring. An affected ath12k Wi-Fi adapter must receive fragmented traffic; the published record establishes invalid memory access but does not specify a resulting crash.

CVSS severity8.8
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid memory access in Linux kernel ath12k allows adjacent attackers to corrupt kernel memory via fragmented Wi-Fi packets. The monitor and REO reinject rings share a mask index, so an REO reinject interrupt incorrectly processes the disabled monitor ring. An affected ath12k Wi-Fi adapter must receive fragmented traffic; the published record establishes invalid memory access but does not specify a resulting crash.

The record

CVE
CVE-2024-43847
Published
Aug 17, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.3
  2. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <073f9f249eecd64ab9d59c91c4a23cfdcc02afe4
  3. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <36fc66a7d9ca3e5c6eac25362cac63f83df8bed6
  4. Affected versionversion=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <8126f82dab7bd8b2e04799342b19fff0a1fd8575

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.3; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <073f9f249eecd64ab9d59c91c4a23cfdcc02afe4; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <36fc66a7d9ca3e5c6eac25362cac63f83df8bed6; version=d889913205cf7ebda905b1e62c5867ed4e39f6c2 <8126f82dab7bd8b2e04799342b19fff0a1fd8575

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8Linux kernel 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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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