CVE-2025-21870
CSIRTS triage
- What
- Hardening of loop bounds checking in ASoC SOF IPC4 topology ALH copier lookup code.
- Who is affected
- Systems running Linux kernel with ASoC SOF audio driver and IPC4 topology support.
- Urgency
- Medium severity; not exploited; audio driver stability and bounds checking improvement.
- Action
- Apply Linux kernel patch addressing CVE-2025-21870 to harden ALH copier loops.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.19% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 9% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2025-21870: ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiersmsrc · 2026-08-06
External references
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