CVE-2026-64592 (GCVE-0-2026-64592)
Vulnerability from cvelistv5
Published
2026-08-06 07:13
Modified
2026-08-17 04:58
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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
| URL | Tags | |
|---|---|---|
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"arch/riscv/kernel/entry.S"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
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"status": "affected",
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},
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"versionType": "git"
},
{
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"version": "503638e0babf364061bc50fca5103b00a56cc50a",
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}
]
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"programFiles": [
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],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.12"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.96",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.39",
"versionType": "semver"
},
{
"lessThanOrEqual": "7.1.*",
"status": "unaffected",
"version": "7.1.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.96",
"versionStartIncluding": "6.12",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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{
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"versionStartIncluding": "6.12",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
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}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nriscv: mm: Unconditionally sfence.vma for spurious fault\n\nSvvptc does not guarantee that it\u0027s safe to just return here. Since we\nhave already cleared our bit, if, theoretically, the bounded timeframe\nfor the accessed page to become valid still hasn\u0027t happened after sret,\nwe could fault again and actually crash.\n\nHopefully, these spurious faults should be rare enough that this is an\nacceptable slowdown."
}
],
"providerMetadata": {
"dateUpdated": "2026-08-17T04:58:14.158Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/c4df24702bfc3cd2bed7746b94dc6139a3fa5428"
},
{
"url": "https://git.kernel.org/stable/c/4d730cab96e6b75e4a07c4baf37294ebc07f795e"
},
{
"url": "https://git.kernel.org/stable/c/ede985ff4b569ed2454024f8bb107a6729fe08aa"
},
{
"url": "https://git.kernel.org/stable/c/1b2c6b56a9fa0dcbef461039937de22b1cbecc7d"
}
],
"title": "riscv: mm: Unconditionally sfence.vma for spurious fault",
"x_generator": {
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}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2026-64592",
"datePublished": "2026-08-06T07:13:49.098Z",
"dateReserved": "2026-07-19T15:36:31.798Z",
"dateUpdated": "2026-08-17T04:58:14.158Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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