CVE-2023-52832

Diagnostic fault via unset transmit-power multiplication

Published May 21, 2024 · Updated May 11, 2026

Signed integer overflow in Linux kernel mac80211 5.7 through 6.6 allows local users to trigger a UBSAN fault during Wi-Fi interface registration. ieee80211_get_tx_power returns INT_MIN as an internal unset sentinel, and nl80211_send_iface multiplies that unchecked value by 100 in a signed integer. The path is reached as a wireless interface is added; published evidence demonstrates an overflow diagnostic but does not demonstrate code execution.

CVSS severity9.1
Critical
EPSS probability1.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Signed integer overflow in Linux kernel mac80211 5.7 through 6.6 allows local users to trigger a UBSAN fault during Wi-Fi interface registration. ieee80211_get_tx_power returns INT_MIN as an internal unset sentinel, and nl80211_send_iface multiplies that unchecked value by 100 in a signed integer. The path is reached as a wireless interface is added; published evidence demonstrates an overflow diagnostic but does not demonstrate code execution.

The record

CVE
CVE-2023-52832
Published
May 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-920
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 21, 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=5.7
  2. Affected versionversion=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <21a0f310a9f3bfd2b4cf4f382430e638607db846
  3. Affected versionversion=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <2be24c47ac19bf639c48c082486c08888bd603c6
  4. Affected versionversion=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <5a94cffe90e20e8fade0b9abd4370bd671fe87c7
  5. Affected versionversion=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <717de20abdcd1d4993fa450e28b8086a352620ea
  6. Affected versionversion=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <adc2474d823fe81d8da759207f4f1d3691aa775a
  7. Affected versionversion=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <e160ab85166e77347d0cbe5149045cb25e83937f

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.7; version=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <21a0f310a9f3bfd2b4cf4f382430e638607db846; version=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <2be24c47ac19bf639c48c082486c08888bd603c6; version=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <5a94cffe90e20e8fade0b9abd4370bd671fe87c7; version=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <717de20abdcd1d4993fa450e28b8086a352620ea; version=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <adc2474d823fe81d8da759207f4f1d3691aa775a; version=db6d9e9e8b48b7ab68c61553eb5fa68534dd0fde <e160ab85166e77347d0cbe5149045cb25e83937f
The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f4

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
5.5OracleCVSS: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

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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

CWE-920Improper Restriction of Power Consumption

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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