CVE-2025-71161: dm-verity: disable recursive forward error correction
CSIRTS triage
- What
- dm-verity recursive forward error correction is disabled due to a vulnerability.
- Who is affected
- Systems using dm-verity with recursive forward error correction enabled are affected.
- Urgency
- Medium severity; this affects data integrity verification in the device mapper.
- Action
- Apply Linux kernel patch CVE-2025-71161 to disable or properly handle recursive FEC in dm-verity.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-71161
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2025-711610.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-71161 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- high[UPDATE] [high] Linux Kernel: Multiple vulnerabilitiescert-bund
- unknownUSN-8669-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu
- unknownUSN-8668-1: Linux kernel (GCP) vulnerabilitiesubuntu
- unknownUSN-8665-1: Linux kernel (Raspberry Pi) vulnerabilitiesubuntu
- unknownUbuntu Linux Kernel Multiple Vulnerabilitieshkcert
- unknownUSN-8620-4: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownUSN-8620-3: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
- unknownUSN-8620-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
- unknownexploitedSiemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFPcisa
- highUSN-8620-1: Linux kernel vulnerabilitiesubuntu
- highUSN-8619-1: Linux kernel (HWE) vulnerabilitiesubuntu
- highUSN-8595-3: Linux kernel (AWS) vulnerabilitiesubuntu
Recent advisories for dm-verity
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalCVE-2026-72098: In the Linux kernel, the following vulnerability has been resolved: dm-verity: fix buffer over…nvd · 2026-08-15
- unknownCVE-2026-72097: In the Linux kernel, the following vulnerability has been resolved: dm-verity: fix a possible …nvd · 2026-08-15
- unknownCVE-2026-72096: In the Linux kernel, the following vulnerability has been resolved: dm-verity: make error coun…nvd · 2026-08-15
- mediumCVE-2026-72098: dm-verity: fix buffer overflow in FEC calculationmsrc · 2026-08-11
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