drm/panthor: skip zero-sized firmware sections

Answer in brief

CVE-2026-80577 records a Unknown severity vulnerability in drm/panthor: skip zero-sized firmware sections. 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 Aug 26, 2026Updated Aug 26, 2026Source checked Aug 26, 2026First seen by HOL Aug 26, 2026Material review Aug 26, 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	>=2718d91816eeed03c09c8abe872e45f59078768c <f0f3c3922db981031733a25c51e1f37cf9b9e251 \|\| >=2718d91816eeed03c09c8abe872e45f59078768c <25556a46ae6ecf2a9f1c1c5096828eecd4596b91 \|\| >=2718d91816eeed03c09c8abe872e45f59078768c <5d222b657f02a37f658e4e21925b85b4703855e7 \|\| >=2718d91816eeed03c09c8abe872e45f59078768c <2b8f13d3c7e26c46c20d9e367904cf01729c88e6	f0f3c3922db981031733a25c51e1f37cf9b9e251, 25556a46ae6ecf2a9f1c1c5096828eecd4596b91, 5d222b657f02a37f658e4e21925b85b4703855e7, 2b8f13d3c7e26c46c20d9e367904cf01729c88e6
Linux/Linuxgeneric	6.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to f0f3c3922db981031733a25c51e1f37cf9b9e251 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 26, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/panthor: skip zero-sized firmware sections panthor_fw_load_section_entry() skips BO creation when the firmware section VA range is empty. If such a section is added to the firmware section list, section->mem is left as NULL. Later reload and unplug paths iterate over all firmware sections and dereference section->mem, which can lead to a NULL pointer dereference. Zero-sized firmware sections are valid, so accept them as no-op entries but skip adding them to the section list.

Quoted source text, attributed separately from HOL analysis.