CVE-2026-80563

System crash via debugfs unbind race

Published Aug 26, 2026 · Updated Aug 26, 2026

Use-after-free in the Linux sloppy logic analyzer driver from 6.11 allows local users with root access to crash the system during unbind. trigger_write() retains gpio_la_poll_priv from an unsafe debugfs file while removal frees that object, so the resumed handler writes trigger data and length into freed memory. Exploitation requires root access to the platform-driver unbind interface and a write racing device removal; the bounded consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux sloppy logic analyzer driver from 6.11 allows local users with root access to crash the system during unbind. trigger_write() retains gpio_la_poll_priv from an unsafe debugfs file while removal frees that object, so the resumed handler writes trigger data and length into freed memory. Exploitation requires root access to the platform-driver unbind interface and a write racing device removal; the bounded consequence is a kernel crash.

The record

CVE
CVE-2026-80563
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825, T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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=6.11
  2. Affected versionversion=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <23e9f32c0c7d2043e39655cff5ee3ddf29a43f80
  3. Affected versionversion=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <24bef4918f6ab806260476e2f93d8f791fd17449
  4. Affected versionversion=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <44f3468a0aef1aabdad551898ab7cfa2a9d20e99
  5. Affected versionversion=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <49a1ebb1ef2c8ada300c174b65273810abb4e326

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <23e9f32c0c7d2043e39655cff5ee3ddf29a43f80; version=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <24bef4918f6ab806260476e2f93d8f791fd17449; version=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <44f3468a0aef1aabdad551898ab7cfa2a9d20e99; version=7828b7bbbf2074dd7dd14d87f50bc5ce9036d692 <49a1ebb1ef2c8ada300c174b65273810abb4e326

Published CVSS scores

5.5Red HatCVSS: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 11, 2026Sep 17, 2026
Latest reporting daySep 17, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-825Expired Pointer Dereference
T1499.004Endpoint Denial of Service: Application or System Exploitation

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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