CVE-2026-93065Hinoki check available

Hang via firmware log counter wrap

Published Sep 17, 2026 · Updated Sep 17, 2026

Counter overflow in Linux 6.5 iwlwifi allows attackers to hang firmware error-log dumping via firmware-reported entry counts. The iwl_fwrt_dump_error_logs function uses an 8-bit count against a 32-bit num_pc, wrapping to zero when firmware advertises more than 255 PC entries. The condition requires the affected driver and firmware error-log path; upstream also identifies an out-of-bounds read risk but does not establish attacker control through Wi-Fi packets.

CVSS severity4.7
Medium
EPSS probability0.17%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Counter overflow in Linux 6.5 iwlwifi allows attackers to hang firmware error-log dumping via firmware-reported entry counts. The iwl_fwrt_dump_error_logs function uses an 8-bit count against a 32-bit num_pc, wrapping to zero when firmware advertises more than 255 PC entries. The condition requires the affected driver and firmware error-log path; upstream also identifies an out-of-bounds read risk but does not establish attacker control through Wi-Fi packets.

The record

CVE
CVE-2026-93065
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=2b69d242e29b891b11f1190201f4a08abb0c8342 <71e67b4b59337b2f9f4fef976a27de2dad7aabf2
  2. Affected versionversion=2b69d242e29b891b11f1190201f4a08abb0c8342 <769e1910d41fdd01453cef4ae032a3c162f029f8
  3. Affected versionversion=2b69d242e29b891b11f1190201f4a08abb0c8342 <8d74cb5fbb7a0d825403a74d18386dc7b22426a9
  4. Affected versionversion=2b69d242e29b891b11f1190201f4a08abb0c8342 <8d8a526f3ec659194f846a2cb33844d9f6cb9995
  5. Affected versionversion=2b69d242e29b891b11f1190201f4a08abb0c8342 <9710b20d09d847e07e190087b0b529673d3f1fad
  6. Affected versionversion=6.4.4 <6.5
  7. Affected versionversion=6.5
  8. Affected versionversion=ff800b0c4797c6e97f09fcd93ca8b83040d77fb4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=2b69d242e29b891b11f1190201f4a08abb0c8342 <71e67b4b59337b2f9f4fef976a27de2dad7aabf2; version=2b69d242e29b891b11f1190201f4a08abb0c8342 <769e1910d41fdd01453cef4ae032a3c162f029f8; version=2b69d242e29b891b11f1190201f4a08abb0c8342 <8d74cb5fbb7a0d825403a74d18386dc7b22426a9; version=2b69d242e29b891b11f1190201f4a08abb0c8342 <8d8a526f3ec659194f846a2cb33844d9f6cb9995; version=2b69d242e29b891b11f1190201f4a08abb0c8342 <9710b20d09d847e07e190087b0b529673d3f1fad; version=6.4.4 <6.5; version=6.5; version=ff800b0c4797c6e97f09fcd93ca8b83040d77fb4

Published CVSS scores

4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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