ksmbd: rate limit unmapped SID errors

Answer in brief

CVE-2026-98113 records a Unknown severity vulnerability in ksmbd: rate limit unmapped SID errors. 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	>=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <13af319c1efec0b45fb5c1b16830eb0888b3fd1e \|\| >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <30dbb08777b9a611d7d9193c040f382fbd0e7562 \|\| >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <54cb2a909996346ac6a8a3beac96c07b3dcba584 \|\| >=e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 <feca5e70fc963b088377b20879e8cd8237c2fd7d	13af319c1efec0b45fb5c1b16830eb0888b3fd1e, 30dbb08777b9a611d7d9193c040f382fbd0e7562, 54cb2a909996346ac6a8a3beac96c07b3dcba584, feca5e70fc963b088377b20879e8cd8237c2fd7d
Linux/Linuxgeneric	5.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 13af319c1efec0b45fb5c1b16830eb0888b3fd1e 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: ksmbd: rate limit unmapped SID errors A client can include many structurally valid but unmapped SIDs in a DACL. Logging every mapping failure lets one request generate hundreds of kernel error messages. Rate limit the message to prevent an authenticated client from flooding the kernel log.

Quoted source text, attributed separately from HOL analysis.