smb/server: call ksmbd_proc_cleanup() on module init failure (CVE-2026-90163) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90163

smb/server: call ksmbd_proc_cleanup() on module init failure

Answer in brief

CVE-2026-90163 records a Unknown severity vulnerability in smb/server: call ksmbd_proc_cleanup() on module init failure. 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 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 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	>=b38f99c1217ae04753340f0fdcd8f35bf56841dc <7d2cd9269b570347e6e2dd24d4b3c1da868bc91d \|\| >=b38f99c1217ae04753340f0fdcd8f35bf56841dc <f43cbe3b58ce989ce420c3bc875d48e7754c8aba	7d2cd9269b570347e6e2dd24d4b3c1da868bc91d, f43cbe3b58ce989ce420c3bc875d48e7754c8aba
Linux/Linuxgeneric	7.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7d2cd9269b570347e6e2dd24d4b3c1da868bc91d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: smb/server: call ksmbd_proc_cleanup() on module init failure When a later initializer fails, the unwind chain releases resources created after procfs and then jumps directly to class_unregister(). Returning an error from module_init() leaves the proc tree and its per-CPU counters allocated.

Quoted source text, attributed separately from HOL analysis.