CVE-2026-64520
Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - ARM64 architecture; - Arm Firmware Framework for ARMv8-A(FFA); (CVE-2026-53354, CVE-2026-64520)
CSIRTS triage
- What
- Several security issues were discovered in the Linux kernel.
- Who is affected
- Users of affected Linux kernel versions.
- Urgency
- Remediation is important as these issues could lead to system compromise.
- Action
- Update the Linux kernel to the latest version to address these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (4)
- unknownUSN-8623-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-07-29
- unknownUSN-8622-1: Linux kernel (NVIDIA) vulnerabilitiesubuntu · 2026-07-29
- highUSN-8618-1: Linux kernel vulnerabilitiesubuntu · 2026-07-28
- highCVE-2026-64520: In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Bound P…nvd · 2026-07-25
External references
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[](https://www.csirts.com/cve/CVE-2026-64520)