VulnerabilityPublished 25 Sep 2026Updated 21 Oct 2026

CVE-2026-100072: Linux kernel · ACPI: platform: Use acpi_bus_get_primary_device()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71, a75e5de593ef158feb17989bff7730c5a3d82503, a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd +1

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 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

Upgrade Linux kernel to c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71, a75e5de593ef158feb17989bff7730c5a3d82503, a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd or 527a497fb2ef77a95170eefe2007e2c4c957bd2c.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 3b95bd160547f56a68aeb972c33ae9511e7a8380, < c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71	Fixed in c9d202d3b6c28e8c779cd2f2b10d2f7ab665ca71
LinuxLinux	Affected ≥ 3b95bd160547f56a68aeb972c33ae9511e7a8380, < a75e5de593ef158feb17989bff7730c5a3d82503	Fixed in a75e5de593ef158feb17989bff7730c5a3d82503
LinuxLinux	Affected ≥ 3b95bd160547f56a68aeb972c33ae9511e7a8380, < a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd	Fixed in a9ba4dd2f18bf3f439d9ef0d8f375f90360ba1bd
LinuxLinux	Affected ≥ 3b95bd160547f56a68aeb972c33ae9511e7a8380, < 527a497fb2ef77a95170eefe2007e2c4c957bd2c	Fixed in 527a497fb2ef77a95170eefe2007e2c4c957bd2c
LinuxLinux	Affected =4.6	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: platform: Use acpi_bus_get_primary_device() The acpi_get_first_physical_node() usage in acpi_platform_fill_resource() and acpi_create_platform_device() is generally unsafe because in theory the device returned by it may be freed at any time [1]. It is also inefficient because acpi_get_first_physical_node() is called multiple times for the same argument which can be avoided. Address these issues by using acpi_bus_get_primary_device() instead of acpi_get_first_physical_node() and adjusting the code to call it just once at the beginning of and acpi_create_platform_device() and drop the device reference acquired by it upon the return from that function.

References

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