Vulnerability 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.
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
FAQ
What is CVE-2026-64592?
CVE-2026-64592 is a documented vulnerability. 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 ha...
How severe is CVE-2026-64592?
CVSS scoring is not yet available for CVE-2026-64592. Check NVD for updates.
Is there a patch for CVE-2026-64592?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.