{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-95702", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2026-09-22T14:46:37.727Z", "datePublished": "2026-10-09T14:44:35.711Z", "dateUpdated": "2026-10-15T18:15:18.924Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2026-10-09T14:44:35.711Z"}, "title": "Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "description": "CWE-416 Use After Free", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-415", "description": "CWE-415 Double Free", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-480", "descriptions": [{"lang": "en", "value": "CAPEC-480 Escaping Virtualization"}]}, {"capecId": "CAPEC-233", "descriptions": [{"lang": "en", "value": "CAPEC-233 Privilege Escalation"}]}], "affected": [{"vendor": "Google", "product": "gVisor", "platforms": ["Linux"], "repo": "https://github.com/google/gvisor", "versions": [{"status": "affected", "version": "0", "lessThan": "20260831.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries."}]}], "references": [{"url": "https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed"}, {"url": "https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df"}, {"url": "https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.5, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Mikhail Sosonkin from OpenAI", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Aegis CNA Automation"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-15T18:14:55.174894Z", "id": "CVE-2026-95702", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T18:15:18.924Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-95702", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-10-15T18:14:55.174894Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T18:15:11.928Z"}}], "cna": {"title": "Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Mikhail Sosonkin from OpenAI"}], "impacts": [{"capecId": "CAPEC-480", "descriptions": [{"lang": "en", "value": "CAPEC-480 Escaping Virtualization"}]}, {"capecId": "CAPEC-233", "descriptions": [{"lang": "en", "value": "CAPEC-233 Privilege Escalation"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.5, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/google/gvisor", "vendor": "Google", "product": "gVisor", "versions": [{"status": "affected", "version": "0", "lessThan": "20260831.0", "versionType": "semver"}], "platforms": ["Linux"], "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed"}, {"url": "https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df"}, {"url": "https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77"}], "x_generator": {"engine": "Aegis CNA Automation"}, "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.", "supportingMedia": [{"type": "text/html", "value": "Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "CWE-416 Use After Free"}]}, {"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-415", "description": "CWE-415 Double Free"}]}], "providerMetadata": {"orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google", "dateUpdated": "2026-10-09T14:44:35.711Z"}}}, "cveMetadata": {"cveId": "CVE-2026-95702", "state": "PUBLISHED", "dateUpdated": "2026-10-15T18:15:18.924Z", "dateReserved": "2026-09-22T14:46:37.727Z", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "datePublished": "2026-10-09T14:44:35.711Z", "assignerShortName": "Google"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Linux"], "product": "gVisor", "repo": "https://github.com/google/gvisor", "vendor": "Google", "versions": [{"lessThan": "20260831.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "cve-coordination@google.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries."}], "id": "CVE-2026-95702", "lastModified": "2026-10-15T19:17:49.723", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cve-coordination@google.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-95702", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-15T18:14:55.174894Z", "version": "2.0.3"}}]}, "published": "2026-10-09T15:17:20.447", "references": [{"source": "cve-coordination@google.com", "url": "https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df"}, {"source": "cve-coordination@google.com", "url": "https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed"}, {"source": "cve-coordination@google.com", "url": "https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}, {"lang": "en", "value": "CWE-416"}], "source": "cve-coordination@google.com", "type": "Secondary"}]}

{"bugzilla": {"description": "gvisor.dev/gvisor: gVisor: Arbitrary code execution via use-after-free in VFS", "id": "2548662", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2548662"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms allows a local attacker with standard container privileges to achieve code execution in the host sentry process by double-freeing the backing MemoryFile from an in-sandbox overlay filesystem. The sentry process remains confined by host-level Linux seccomp and namespace boundaries.", "A flaw was found in Google gVisor's Virtual File System (VFS). A local attacker with standard container privileges can exploit this vulnerability to achieve arbitrary code execution within the host sentry process. By improperly releasing a backing memory file multiple times from an in-sandbox overlay filesystem, the attacker triggers a use-after-free memory corruption condition. While code execution occurs in the sentry process, the process remains restricted by host-level security filters and namespace boundaries."], "name": "CVE-2026-95702", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "gvisor-tap-vsock", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "container-tools:rhel8/podman", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "gvisor-tap-vsock", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "podman", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "podman", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-09T14:44:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-95702\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-95702\nhttps://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df\nhttps://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed\nhttps://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77"], "threat_severity": "Important"}