octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup (CVE-2026-90080) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90080

octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup

Answer in brief

CVE-2026-90080 records a Unknown severity vulnerability in octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup. 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	>=efabce29015189cb5cd8066cf29eb1d754de6c3c <b003d5b4e46ca5033859db601e12d36da24d0e40 \|\| >=efabce29015189cb5cd8066cf29eb1d754de6c3c <7e33c6bd049b532d2ec4916895ef07e538bed905 \|\| >=efabce29015189cb5cd8066cf29eb1d754de6c3c <b09a0503c755b6609fad59a84cc7f05b6843a03c \|\| 9bd7273cf1f9c5761d696cca821d25602e8f7009 \|\| >=6.14.9 <6.15	b003d5b4e46ca5033859db601e12d36da24d0e40, 7e33c6bd049b532d2ec4916895ef07e538bed905, b09a0503c755b6609fad59a84cc7f05b6843a03c, 6.15
Linux/Linuxgeneric	6.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b003d5b4e46ca5033859db601e12d36da24d0e40 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: octeontx2-pf: fix NULL deref of af_xdp_zc_qidx on rep setup af_xdp_zc_qidx tracks receive queues using AF_XDP zero-copy and is allocated during PF/VF probe. Representors and other non-AF_XDP paths leave the pointer NULL, but several call sites used test_bit() on it unconditionally. Switching to devlink eswitch mode creates representors and runs otx2_init_hw_resources(), which reaches otx2_pool_aq_init() and oopses when dereferencing the NULL bitmap. Add NULL checks before every af_xdp_zc_qidx test_bit() use in the RSS, ethtool, XSK, and pool init paths.

Quoted source text, attributed separately from HOL analysis.