Unchecked HKDF key-size input in EL3 causes a stack buffer overflow (CVE-2026-58008) | HOL Guard CVE

High · CVSS 8.3CVE-2026-58008

Unchecked HKDF key-size input in EL3 causes a stack buffer overflow

Answer in brief

CVE-2026-58008 records a High severity (CVSS 8.3) vulnerability in Unchecked HKDF key-size input in EL3 causes a stack buffer overflow. The current sources do not mark it as known exploited. The current feed maps Altera/Trusted Firmware (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: High · CVSS 8.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 8.3. 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 Altera/Trusted Firmware (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Altera/Trusted Firmwaregeneric	>=0 <=socfpga_v2.14.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Altera/Trusted Firmware.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

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

Source referencealtera.com

Upstream source description

Stack-based buffer overflow vulnerability in Altera Trusted Firmware on HPS allows Exploitation of Improperly Configured or Implemented Memory Protections. This issue affects Trusted Firmware: through socfpga_v2.14.0.

Quoted source text, attributed separately from HOL analysis.