CVE-2026-72070

Service interruption via unsynchronized timer teardown

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in the Linux libertas_tf Wi-Fi driver allows local users to interrupt service during device removal after a command timeout. lbtf_free_adapter() deletes command_timer without waiting for command_timer_fn() to finish, allowing the callback to dereference priv after ieee80211_free_hw() frees it. Reachability requires the affected driver, an outstanding firmware command that times out, and concurrent device removal; the published impact is limited to availability.

CVSS severity5.5
Medium
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

Use-after-free in the Linux libertas_tf Wi-Fi driver allows local users to interrupt service during device removal after a command timeout. lbtf_free_adapter() deletes command_timer without waiting for command_timer_fn() to finish, allowing the callback to dereference priv after ieee80211_free_hw() frees it. Reachability requires the affected driver, an outstanding firmware command that times out, and concurrent device removal; the published impact is limited to availability.

The record

CVE
CVE-2026-72070
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=06b16ae5319251c26377afcb401e46056d5673f4 <066b59e84f90d270cc15f0370166155aca507630
  2. Affected versionversion=06b16ae5319251c26377afcb401e46056d5673f4 <4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcf
  3. Affected versionversion=06b16ae5319251c26377afcb401e46056d5673f4 <aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438d
  4. Affected versionversion=06b16ae5319251c26377afcb401e46056d5673f4 <bcf7968cb97ce4312588042cf2712f04caff6d8f
  5. Affected versionversion=06b16ae5319251c26377afcb401e46056d5673f4 <fcff712d0e3d183843ec3916470ee6cc3455baad
  6. Affected versionversion=2.6.28

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=06b16ae5319251c26377afcb401e46056d5673f4 <066b59e84f90d270cc15f0370166155aca507630; version=06b16ae5319251c26377afcb401e46056d5673f4 <4714e95f5d61cb9c5c7c6c4e68b618f37bc6ffcf; version=06b16ae5319251c26377afcb401e46056d5673f4 <aa6dcd5c8dd9ba1d7d0f60093bcda41c0d6d438d; version=06b16ae5319251c26377afcb401e46056d5673f4 <bcf7968cb97ce4312588042cf2712f04caff6d8f; version=06b16ae5319251c26377afcb401e46056d5673f4 <fcff712d0e3d183843ec3916470ee6cc3455baad; version=2.6.28

Published CVSS scores

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

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499Endpoint Denial of Service

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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