CVE-2026-64592

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-64592", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-07-19T15:36:31.798Z", "datePublished": "2026-08-06T07:13:49.098Z", "dateUpdated": "2026-08-17T04:58:14.158Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-17T04:58:14.158Z"}, "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's 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't 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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/riscv/kernel/entry.S"], "versions": [{"version": "503638e0babf364061bc50fca5103b00a56cc50a", "lessThan": "c4df24702bfc3cd2bed7746b94dc6139a3fa5428", "status": "affected", "versionType": "git"}, {"version": "503638e0babf364061bc50fca5103b00a56cc50a", "lessThan": "4d730cab96e6b75e4a07c4baf37294ebc07f795e", "status": "affected", "versionType": "git"}, {"version": "503638e0babf364061bc50fca5103b00a56cc50a", "lessThan": "ede985ff4b569ed2454024f8bb107a6729fe08aa", "status": "affected", "versionType": "git"}, {"version": "503638e0babf364061bc50fca5103b00a56cc50a", "lessThan": "1b2c6b56a9fa0dcbef461039937de22b1cbecc7d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["arch/riscv/kernel/entry.S"], "versions": [{"version": "6.12", "status": "affected"}, {"version": "0", "lessThan": "6.12", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.96", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.39", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.1.4", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.12.96"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "6.18.39"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.1.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.12", "versionEndExcluding": "7.2"}]}]}], "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": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"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": [{"lessThan": "c4df24702bfc3cd2bed7746b94dc6139a3fa5428", "status": "affected", "version": "503638e0babf364061bc50fca5103b00a56cc50a", "versionType": "git"}, {"lessThan": "4d730cab96e6b75e4a07c4baf37294ebc07f795e", "status": "affected", "version": "503638e0babf364061bc50fca5103b00a56cc50a", "versionType": "git"}, {"lessThan": "ede985ff4b569ed2454024f8bb107a6729fe08aa", "status": "affected", "version": "503638e0babf364061bc50fca5103b00a56cc50a", "versionType": "git"}, {"lessThan": "1b2c6b56a9fa0dcbef461039937de22b1cbecc7d", "status": "affected", "version": "503638e0babf364061bc50fca5103b00a56cc50a", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/riscv/kernel/entry.S"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.12"}, {"lessThan": "6.12", "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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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's 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't 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."}], "id": "CVE-2026-64592", "lastModified": "2026-08-17T05:18:05.647", "metrics": {}, "published": "2026-08-06T08:16:34.610", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1b2c6b56a9fa0dcbef461039937de22b1cbecc7d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4d730cab96e6b75e4a07c4baf37294ebc07f795e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c4df24702bfc3cd2bed7746b94dc6139a3fa5428"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ede985ff4b569ed2454024f8bb107a6729fe08aa"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[503638e0babf364061bc50fca5103b00a56cc50a,c4df24702bfc3cd2bed7746b94dc6139a3fa5428)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[503638e0babf364061bc50fca5103b00a56cc50a,4d730cab96e6b75e4a07c4baf37294ebc07f795e)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[503638e0babf364061bc50fca5103b00a56cc50a,ede985ff4b569ed2454024f8bb107a6729fe08aa)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[503638e0babf364061bc50fca5103b00a56cc50a,1b2c6b56a9fa0dcbef461039937de22b1cbecc7d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.12"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.12)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,7.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-08-06T08:30:17.167175+00:00", "updated": "2026-08-06T08:45:17.549120+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476", "CWE-252"]}