net: mctp: i3c: serialize probe with bus removal (CVE-2026-98018) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98018

net: mctp: i3c: serialize probe with bus removal

Answer in brief

CVE-2026-98018 records a Unknown severity vulnerability in net: mctp: i3c: serialize probe with bus removal. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 <e6541b2747682fdb2c6ded4a7cf7c39c4067a35c \|\| >=c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 <765c5e357e67916a7aac8ead4ac2fa7d2bffe000 \|\| >=c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 <906d8dbafabfa81a30e3ade420cb9912f223a5e1 \|\| >=c8755b29b58ec65be17bcb8c40763d2dcb1f1db5 <2b4707a149a55e8fa75c9ef32b359d60f470a566	e6541b2747682fdb2c6ded4a7cf7c39c4067a35c, 765c5e357e67916a7aac8ead4ac2fa7d2bffe000, 906d8dbafabfa81a30e3ade420cb9912f223a5e1, 2b4707a149a55e8fa75c9ef32b359d60f470a566
Linux/Linuxgeneric	6.7	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to e6541b2747682fdb2c6ded4a7cf7c39c4067a35c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: net: mctp: i3c: serialize probe with bus removal mctp_i3c_probe() drops busdevs_lock after finding the matching bus. A concurrent I3C_NOTIFY_BUS_REMOVE can then unregister and free the bus netdev before probe passes its private data to mctp_i3c_add_device(). The latter consequently adds a list node through a freed mbus pointer. Keep busdevs_lock held until the device has been added. This also satisfies the __must_hold annotation on mctp_i3c_add_device().

Quoted source text, attributed separately from HOL analysis.