CVE-2025-37834: mm/vmscan: don't try to reclaim hwpoison folio
CSIRTS triage
- What
- The virtual memory scan (vmscan) subsystem attempts to reclaim hardware poison (corrupted) memory, causing unexpected behavior.
- Who is affected
- Linux systems experiencing hardware memory errors or poisoning events.
- Urgency
- Medium urgency; affects memory error handling but not actively exploited.
- Action
- Apply the Linux kernel patch preventing reclamation of hardware-poisoned folios in vmscan.
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-2025-37834
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-2025-378340.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2025-37834 | coverage & exploitation status | NVD · CVE.org |
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