CVE-2026-64592 is a vulnerability in Linux Kernel
Published on August 6, 2026
riscv: mm: Unconditionally sfence.vma for spurious fault
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.
Products Associated with CVE-2026-64592
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Affected Versions
Linux:- Version 503638e0babf364061bc50fca5103b00a56cc50a and below c4df24702bfc3cd2bed7746b94dc6139a3fa5428 is affected.
- Version 503638e0babf364061bc50fca5103b00a56cc50a and below 4d730cab96e6b75e4a07c4baf37294ebc07f795e is affected.
- Version 503638e0babf364061bc50fca5103b00a56cc50a and below ede985ff4b569ed2454024f8bb107a6729fe08aa is affected.
- Version 503638e0babf364061bc50fca5103b00a56cc50a and below 1b2c6b56a9fa0dcbef461039937de22b1cbecc7d is affected.
- Version 6.12 is affected.
- Before 6.12 is unaffected.
- Version 6.12.96, <= 6.12.* is unaffected.
- Version 6.18.39, <= 6.18.* is unaffected.
- Version 7.1.4, <= 7.1.* is unaffected.
- Version 7.2-rc1, <= * is unaffected.