CVE-2026-46307

Transmit-status corruption via unchecked ath5k rate index

Published Jun 8, 2026 · Updated Jun 8, 2026

An out-of-bounds write in the Linux Kernel ath5k driver corrupts transmit-status metadata when the final rate index reaches three. In ath5k_tasklet_tx, code writes an idx = -1 sentinel to rates[ts_final_idx + 1] without checking the four-entry rates array boundary. The condition occurs when ts_final_idx is three on 5212 hardware, and the write only overwrites the adjacent ack_signal field.

CVSS severity8.3
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in the Linux Kernel ath5k driver corrupts transmit-status metadata when the final rate index reaches three. In ath5k_tasklet_tx, code writes an idx = -1 sentinel to rates[ts_final_idx + 1] without checking the four-entry rates array boundary. The condition occurs when ts_final_idx is three on 5212 hardware, and the write only overwrites the adjacent ack_signal field.

The record

CVE
CVE-2026-46307
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-125
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 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=3.0
  2. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <568173ad9bd0b46cc6cd937dea8791e9b5eefa57
  3. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <744c19e266b0d2628c5951439195dcef27eadacf
  4. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <83226c71af53fb9b3cad40cb9a9a79f36d68c020
  5. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <9dd6aae4bc7bfa11088d928670a3315eae542769
  6. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <d6869537013b1f21b292342752d97868b79b5934
  7. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <d748603f12baff112caa3ab7d39f50100f010dbd
  8. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <e9f1081bc775146156def0dbc821b92f35d56afb
  9. Affected versionversion=6d7b97b23e114c8fbb825e6721164d228c1af3fc <ecb1c163166759dec004c1fdb9709b8a5992fc8e

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3.0; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <568173ad9bd0b46cc6cd937dea8791e9b5eefa57; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <744c19e266b0d2628c5951439195dcef27eadacf; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <83226c71af53fb9b3cad40cb9a9a79f36d68c020; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <9dd6aae4bc7bfa11088d928670a3315eae542769; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <d6869537013b1f21b292342752d97868b79b5934; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <d748603f12baff112caa3ab7d39f50100f010dbd; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <e9f1081bc775146156def0dbc821b92f35d56afb; version=6d7b97b23e114c8fbb825e6721164d228c1af3fc <ecb1c163166759dec004c1fdb9709b8a5992fc8e

Published CVSS scores

8.3kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

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-125Out-of-bounds Read

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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