VulnerabilityPublished 18 Oct 2026

CVE-2026-98504: Linux kernel · PCI: of_property: Omit bus properties without a subordinate bus

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in ccd32fa3489cbe86a0b281da4447b4c7eadb3518 : patch Linux kernel soon.

Data as of 26 Oct 2026, 14:05 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in ccd32fa3489cbe86a0b281da4447b4c7eadb3518, aee774588abd78f75952fd34c3fa461bc46b62c2, a6d97d10e49ae49026ae13af6c41634fce470a37 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 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

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 407d1a51921e9f28c1bcec647c2205925bd1fdab, < ccd32fa3489cbe86a0b281da4447b4c7eadb3518	Fixed in ccd32fa3489cbe86a0b281da4447b4c7eadb3518
LinuxLinux	Affected ≥ 407d1a51921e9f28c1bcec647c2205925bd1fdab, < aee774588abd78f75952fd34c3fa461bc46b62c2	Fixed in aee774588abd78f75952fd34c3fa461bc46b62c2
LinuxLinux	Affected ≥ 407d1a51921e9f28c1bcec647c2205925bd1fdab, < a6d97d10e49ae49026ae13af6c41634fce470a37	Fixed in a6d97d10e49ae49026ae13af6c41634fce470a37
LinuxLinux	Affected ≥ 407d1a51921e9f28c1bcec647c2205925bd1fdab, < 8805840aad73df7146778be243a196d48b4f6430	Fixed in 8805840aad73df7146778be243a196d48b4f6430
LinuxLinux	Affected ≥ 407d1a51921e9f28c1bcec647c2205925bd1fdab, < 879c911f77b8a7862aa16079b04efc3fdc5d32ec	Fixed in 879c911f77b8a7862aa16079b04efc3fdc5d32ec
LinuxLinux	Affected =6.6	Fixed in–

AI-suggested

A fix is available and has been applied in Linux kernel commits ccd32fa3489cbe86a0b281da4447b4c7eadb3518, aee774588abd78f75952fd34c3fa461bc46b62c2, a6d97d10e49ae49026ae13af6c41634fce470a37, 8805840aad73df7146778be243a196d48b4f6430, and 879c911f77b8a7862aa16079b04efc3fdc5d32ec. Users should update to a Linux kernel version including these fixes to prevent the NULL pointer dereference and early boot hang. No additional mitigations are required beyond applying the official patch.

Description

A vulnerability in the Linux kernel PCI subsystem could cause a NULL pointer dereference and early boot hang when dynamic device tree helpers access bus properties without verifying the existence of a subordinate bus. This occurs if a PCI bridge device lacks a secondary bus allocation and the kernel configuration enables dynamic PCI device tree nodes. The issue was introduced in Linux kernel version 6.15 and fixed in subsequent commits.

Impact

If exploited, this vulnerability causes a NULL pointer dereference in the Linux kernel during early boot, resulting in a system hang. This disrupts system startup and could prevent the affected system from booting properly when dynamic PCI device tree nodes are enabled. There is no indication of remote code execution or privilege escalation from this flaw. No known exploits are reported in the wild.

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 26 Oct 2026, 11:03 UTC

Technical details

References

Community reviews

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