NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease() (CVE-2026-90148) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90148

NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease()

Answer in brief

CVE-2026-90148 records a Unknown severity vulnerability in NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease(). 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	>=e93a5e9306a576011f03011b492d4fbaa274477b <ff7244faa13b23e9acfad9df0438f0b44b338f62 \|\| >=e93a5e9306a576011f03011b492d4fbaa274477b <d148a652d52fd6aee96daf798922eb800ebb3018 \|\| >=e93a5e9306a576011f03011b492d4fbaa274477b <d179ff22cd8514f966966fd9ad425dcbb98e1ada \|\| >=e93a5e9306a576011f03011b492d4fbaa274477b <468e458ffde907ba19acd2102ca1fbb8f6fbede2	ff7244faa13b23e9acfad9df0438f0b44b338f62, d148a652d52fd6aee96daf798922eb800ebb3018, d179ff22cd8514f966966fd9ad425dcbb98e1ada, 468e458ffde907ba19acd2102ca1fbb8f6fbede2
Linux/Linuxgeneric	5.14	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ff7244faa13b23e9acfad9df0438f0b44b338f62 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: NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease() When nfs4_add_lease() races with a delegation return, it calls nfs4_delete_lease() to clean up. Previously, it passed priv, which can legitimately be NULL. Passing a NULL priv eventually leads to a NULL pointer dereference in generic_setlease().

Quoted source text, attributed separately from HOL analysis.