CVE-2026-23152

One-byte over-read via default TTLM parsing

Published Feb 14, 2026 · Updated Feb 14, 2026

Out-of-bounds read in Linux Kernel mac80211 allows attackers to trigger a one-byte over-read via a default-mapping TTLM element. The TTLM decoder parses link-mapping fields even when the element denotes the implicit default mapping and contains no mapping-presence indicator, advancing one byte beyond the element boundary. Reachability requires mac80211 to process an advertised TTLM carrying the default mapping; public records establish the over-read and availability impact but do not identify a confirmed crash mode.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Linux Kernel mac80211 allows attackers to trigger a one-byte over-read via a default-mapping TTLM element. The TTLM decoder parses link-mapping fields even when the element denotes the implicit default mapping and contains no mapping-presence indicator, advancing one byte beyond the element boundary. Reachability requires mac80211 to process an advertised TTLM carrying the default mapping; public records establish the over-read and availability impact but do not identify a confirmed crash mode.

The record

CVE
CVE-2026-23152
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 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=6.7
  2. Affected versionversion=702e80470a3359ce02b3f846f48f6db4ac7fd837 <1eab33aa63c993685dd341e03bd5b267dd7403fa
  3. Affected versionversion=702e80470a3359ce02b3f846f48f6db4ac7fd837 <aabc36857bd39da65fe2d047bfaf63a0a09917d4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.7; version=702e80470a3359ce02b3f846f48f6db4ac7fd837 <1eab33aa63c993685dd341e03bd5b267dd7403fa; version=702e80470a3359ce02b3f846f48f6db4ac7fd837 <aabc36857bd39da65fe2d047bfaf63a0a09917d4

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.

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

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

No sourced classifications are available.

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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