CVE-2026-64249: fpga: region: fix use-after-free in child_regions_with_firmware()

highCVSS 8.4CVE-2026-64249

CSIRTS triage

Other

What: A use-after-free vulnerability exists in the child_regions_with_firmware function.
Who is affected: Deployments using the affected FPGA region functionality are at risk.
Urgency: Remediation urgency is unknown due to lack of severity information.
Action: Monitor for updates regarding this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 8.4
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64249

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-2026-642490.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-64249	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

medium[NEW] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
unknownMultiples vulnérabilités dans le noyau Linux de Debian LTS (31 juillet 2026)cert-fr-avis
unknownCVE-2026-64249: In the Linux kernel, the following vulnerability has been resolved: fpga: region: fix use-afte…nvd

Recent advisories for fpga

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.

highCVE-2026-64280: In the Linux kernel, the following vulnerability has been resolved: fpga: dfl-afu: validate DM…nvd · 2026-07-25
unknownCVE-2026-64249: In the Linux kernel, the following vulnerability has been resolved: fpga: region: fix use-afte…nvd · 2026-07-24
highCVE-2026-64280: fpga: dfl-afu: validate DMA mapping length in afu_dma_map_region()msrc · 2026-07-14