CVE-2026-89464

Kernel use-after-free via uncanceled charger workers

Published Sep 11, 2026 · Updated Sep 11, 2026

Use-after-free in the Linux twl4030 charger driver allows attackers to access freed kernel memory via a device-removal race. The twl4030_bci_remove function leaves two workers active after their devm-allocated bci object is freed, and either worker can dereference that stale object. The flaw requires the TWL4030 charger driver and device teardown while work is pending; the demonstrated consequence is a kernel use-after-free detected by KASAN.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
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 twl4030 charger driver allows attackers to access freed kernel memory via a device-removal race. The twl4030_bci_remove function leaves two workers active after their devm-allocated bci object is freed, and either worker can dereference that stale object. The flaw requires the TWL4030 charger driver and device teardown while work is pending; the demonstrated consequence is a kernel use-after-free detected by KASAN.

The record

CVE
CVE-2026-89464
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 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=2.6.39
  2. Affected versionversion=d6ccc442b12102414c1343f0adacaa8a1aaa516c <6eba34732524067da2aad5ddfdfbc641ded10e9e
  3. Affected versionversion=d6ccc442b12102414c1343f0adacaa8a1aaa516c <72a2d6cd049f892853e4e2d8d8fc5e7d0244a458
  4. Affected versionversion=d6ccc442b12102414c1343f0adacaa8a1aaa516c <a4460e89d4088cfec2da5be33e265ef1a8e780e9
  5. Affected versionversion=d6ccc442b12102414c1343f0adacaa8a1aaa516c <b955da82db4170bdf1c784dc457287aa0c977378

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.39; version=d6ccc442b12102414c1343f0adacaa8a1aaa516c <6eba34732524067da2aad5ddfdfbc641ded10e9e; version=d6ccc442b12102414c1343f0adacaa8a1aaa516c <72a2d6cd049f892853e4e2d8d8fc5e7d0244a458; version=d6ccc442b12102414c1343f0adacaa8a1aaa516c <a4460e89d4088cfec2da5be33e265ef1a8e780e9; version=d6ccc442b12102414c1343f0adacaa8a1aaa516c <b955da82db4170bdf1c784dc457287aa0c977378

Published CVSS scores

No CVSS assessment is available in this record.

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
PrivilegesUnavailable
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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