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{"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": "2026-10-09T16:35:35.900", "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"}]}, "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"}

{"affected": [{"configurations": [{"platform": ["linux"], "status": "affected", "versions": {"scheme": "generic", "value": "[0,20260831.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "gVisor", "source": "cna", "vendor": "Google"}, "product": "gvisor", "vendor": "google"}], "created": "2026-10-09T16:45:09.115881+00:00", "updated": "2026-10-13T02:15:15.130425+00:00", "vendors": ["google", "google$PRODUCT$gvisor"]}