VulnerabilityPublished 26 Oct 2026Updated 27 Oct 2026

CVE-2026-99001: Linux kernel · drm/xe/i2c: cancel the client work on remove

Affects Linux kernelSource GCVE Database

Authoritative record:CVE-2026-99001· High

Not known to be exploited.

Data as of 28 Oct 2026, 01:58 UTC

Severity

High

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Ubuntu 26.10linux`pkg:deb/ubuntu/linux?arch=source&distro=stonking`Other threats	Affected 7.0.0-14.14 – 7.3.0-9.9 6 affected builds	Fixed in–
Ubuntu 26.10linux-aws`pkg:deb/ubuntu/linux-aws?arch=source&distro=stonking`Other threats	Affected 7.0.0-1004.4 – 7.3.0-1003.3 5 affected builds	Fixed in–
Ubuntu 26.10linux-azure`pkg:deb/ubuntu/linux-azure?arch=source&distro=stonking`Other threats	Affected 7.0.0-1004.4 – 7.3.0-1003.3 5 affected builds	Fixed in–
Ubuntu 26.10linux-azure-fde`pkg:deb/ubuntu/linux-azure-fde?arch=source&distro=stonking`Other threats	Affected =7.0.0-1004.4 =7.3.0-1002.3 =7.3.0-1003.4	Fixed in–
Ubuntu 26.10linux-gcp`pkg:deb/ubuntu/linux-gcp?arch=source&distro=stonking`Other threats	Affected 7.0.0-1003.3 – 7.3.0-1003.3 5 affected builds	Fixed in–
Ubuntu 26.10linux-oracle`pkg:deb/ubuntu/linux-oracle?arch=source&distro=stonking`Other threats	Affected 7.0.0-1003.3 – 7.3.0-1003.3 5 affected builds	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix has been implemented that moves the bus notifier unregistration before client device teardown and cancels any queued work to prevent use-after-free. Users should apply the updated kernel versions containing this patch to mitigate the vulnerability. No additional mitigation steps are indicated.

Description

A use-after-free vulnerability in the Linux kernel's drm/xe/i2c driver was resolved by ensuring proper cancellation of client work during device removal. The flaw involved a work item accessing freed memory after the I2C adapter was unregistered, potentially causing memory corruption or instability. The fix moves the bus notifier unregistration earlier and cancels queued work to prevent use-after-free conditions.

Impact

The vulnerability can cause use-after-free conditions leading to memory corruption or kernel instability. It affects the drm/xe/i2c driver in affected Linux kernel versions, potentially resulting in system crashes or unpredictable behavior when the affected driver is unloaded or devices are removed.

Summary

CVE-2026-99001 addresses a use-after-free vulnerability in the Linux kernel drm/xe/i2c driver. The issue arises because xe_i2c_remove() unregisters client devices, the bus notifier, and the adapter platform device without draining the queued work item i2c->work. This work item, scheduled by the bus notifier, can run after the adapter is unregistered and the associated memory freed, leading to dereferencing freed memory and potential instability. The patch reorders bus_unregister_notifier() to occur before client teardown and cancels the queued work to ensure no new instances are scheduled and any queued work is drained before client arrays are modified. This prevents the work callback from running on freed memory while still allowing a running instance to access a live adapter.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 28 Oct 2026, 01:58 UTC

Technical details

References

Community reviews

Related threats