What’s Vulnerable › Vulnerabilities

CVE-2026-64592: riscv: mm: Unconditionally sfence.vma for spurious fault

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: riscv: mm: Unconditionally sfence.vma for spurious fault Svvptc does not guarantee that it's safe to just return here. Since we have already cleared our bit, if, theoretically, the bounded timeframe for the accessed page to become valid still hasn't happened after sret, we could fault again and actually crash. Hopefully, these spurious faults should be rare enough that this is an acceptable slowdown.

Affected products

• Linux kernel: 6.12 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1b2c6b56a9fa0dcbef461039937de22b1cbecc7d
• https://git.kernel.org/stable/c/4d730cab96e6b75e4a07c4baf37294ebc07f795e
• https://git.kernel.org/stable/c/c4df24702bfc3cd2bed7746b94dc6139a3fa5428
• https://git.kernel.org/stable/c/ede985ff4b569ed2454024f8bb107a6729fe08aa

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