Answer in brief
CVE-2024-56721 records a High severity (CVSS 7.1) vulnerability in x86/CPU/AMD: Terminate the erratum_1386_microcode array. 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.
CVSS is 7.1. 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.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=29ba89f1895285f06c333546882e0c5ae9a6df23 <82d6b82cf89d950982ac240ba068c3a7e1f23b0a || >=29ba89f1895285f06c333546882e0c5ae9a6df23 <ccfee14f08b8699132b87bc6d78e0fa75bf094dd || >=29ba89f1895285f06c333546882e0c5ae9a6df23 <ff6cdc407f4179748f4673c39b0921503199a0ad | 82d6b82cf89d950982ac240ba068c3a7e1f23b0a, ccfee14f08b8699132b87bc6d78e0fa75bf094dd, ff6cdc407f4179748f4673c39b0921503199a0ad |
| Linux/Linuxgeneric | 6.10 | Not reported |
Published upstream
Dec 29, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Terminate the erratum_1386_microcode array The erratum_1386_microcode array requires an empty entry at the end. Otherwise x86_match_cpu_with_stepping() will continue iterate the array after it ended. Add an empty entry to erratum_1386_microcode to its end.
Quoted source text, attributed separately from HOL analysis.