net: dsa: sja1105: flower: reject cross-chip redirect (CVE-2026-97435) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97435

net: dsa: sja1105: flower: reject cross-chip redirect

Answer in brief

CVE-2026-97435 records a Unknown severity vulnerability in net: dsa: sja1105: flower: reject cross-chip redirect. The current sources do not mark it as known exploited. The current feed maps 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 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
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). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <c999cc39775381b68ed66eae57c1425452672c0f \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <abd7511e12b231798332afa04ed9bee9e84f9445 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0 \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	c999cc39775381b68ed66eae57c1425452672c0f, abd7511e12b231798332afa04ed9bee9e84f9445, cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0, 6.12.111, 6.18.53

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to c999cc39775381b68ed66eae57c1425452672c0f if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 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: dsa: sja1105: flower: reject cross-chip redirect dsa_port_from_netdev() may return a valid port from a different switch chip. Programming another chip's port index into the local hardware causes redirection to the wrong port, or an out-of-bounds access if the index exceeds the local chip's port count. Apply a minimal fix that adds a check to catch this case and adjusts the extack message. When cls->common.skip_sw is not set, the operation could instead redirect to the upstream port and let the software or upstream switch(es) handle the forward, but that is not addressed here.

Quoted source text, attributed separately from HOL analysis.