VulnerabilityPublished 18 Oct 2026

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

Source GCVE Database

Authoritative record:CVE-2026-98504· High

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

Data as of 26 Oct 2026, 14:05 UTC

Severity

High

Rated by Threat Radar · 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.

ghsa-56f2-rw4q-8x32

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 has been implemented in the Linux kernel to prevent the NULL pointer dereference by checking for the presence of a subordinate bus before generating 'bus-range' and 'interrupt-map' properties. Users should update to a kernel version including this fix (introduced after v6.15). Patch status is not explicitly confirmed in the provided data; users should consult the official Linux kernel advisories or changelogs for the exact fixed versions and apply the official updates accordingly.

Description

A vulnerability in the Linux kernel's PCI device tree handling was resolved. The issue occurs when a PCI bridge device lacks a subordinate bus, causing certain dynamic device tree helper functions to dereference a null pointer. This can lead to a NULL pointer dereference and an early boot hang when the PCI dynamic device tree nodes feature is enabled. The fix ensures that 'bus-range' and 'interrupt-map' properties are only generated if a subordinate bus exists, preventing the null dereference. The vulnerability was introduced in kernel version 6.15 and affects configurations with CONFIG_PCI_DYNAMIC_OF_NODES enabled.

References

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