CVE-2026-64592
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 versions
Linux kernel versions
6.12
and later are affected. Fixed in
6.12.96,
6.18.39,
7.1.4,
7.2-rc1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-64592?
CVE-2026-64592 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12 onward and has been patched in 6.12.96, 6.18.39, 7.1.4 and others. CVE-2026-64592 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-64592?
Yes. CVE-2026-64592 has been patched. Fixed versions include 6.12.96, 6.18.39, 7.1.4 and others. If you are running Linux kernel 6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-64592 actively exploited?
No. CVE-2026-64592 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.