High
golang-gvisor-gvisor — security advisory
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.
- Products
- golang-gvisor-gvisor
- Affected versions
- 0.0~20221219.0-2, 0.0~20230807.0-1, 0.0~20230807.0-2, 0.0~20230807.0-3, 0.0~20230807.0-4, 0.0~20230807.0-4~bpo12+1, 0.0~20230807.0-5, 0.0~20240729.0-1, 0.0~20240729.0-2, 0.0~20240729.0-3, 0.0~20240729.0-4, 0.0~20240729.0-4~bpo12+1, 0.0~20240729.0-4~bpo12+2, 0.0~20240729.0-5, 0.0~20240729.0-6, 0.0~20240729.0-7
- Fixed versions
- Not specified
- CVEs
- CVE-2026-95702
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 20:00 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2026-95702
golang-gvisor-gvisor
Fixed versions: Not specified
golang-gvisor-gvisor
Fixed versions: Not specified
golang-gvisor-gvisor
Fixed versions: Not specified
Complete source record
{
"id": "d7e4a3ab0a5544d1a7c9c1c2ef60c94127eeb752bab858a5d5e3b07542b04531",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-95702",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-95702",
"summary": "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.",
"evidence": "osv:DEBIAN-CVE-2026-95702",
"products": [
{
"name": {
"value": "golang-gvisor-gvisor",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0~20221219.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20230807.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20230807.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20230807.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20230807.0-4",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20230807.0-4~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20230807.0-5",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-4",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-4~bpo12+1",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-4~bpo12+2",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-5",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-6",
"evidence": "/affected/0/versions"
},
{
"value": "0.0~20240729.0-7",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "golang-gvisor-gvisor",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0~20240729.0-4",
"evidence": "/affected/1/versions"
},
{
"value": "0.0~20240729.0-5",
"evidence": "/affected/1/versions"
},
{
"value": "0.0~20240729.0-6",
"evidence": "/affected/1/versions"
},
{
"value": "0.0~20240729.0-7",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "golang-gvisor-gvisor",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.0~20240729.0-4",
"evidence": "/affected/2/versions"
},
{
"value": "0.0~20240729.0-5",
"evidence": "/affected/2/versions"
},
{
"value": "0.0~20240729.0-6",
"evidence": "/affected/2/versions"
},
{
"value": "0.0~20240729.0-7",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-95702",
"aliases": [
"DEBIAN-CVE-2026-95702"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "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"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-gvisor-gvisor",
"purl": "pkg:deb/debian/golang-gvisor-gvisor?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.0~20221219.0-2",
"0.0~20230807.0-1",
"0.0~20230807.0-2",
"0.0~20230807.0-3",
"0.0~20230807.0-4",
"0.0~20230807.0-4~bpo12+1",
"0.0~20230807.0-5",
"0.0~20240729.0-1",
"0.0~20240729.0-2",
"0.0~20240729.0-3",
"0.0~20240729.0-4",
"0.0~20240729.0-4~bpo12+1",
"0.0~20240729.0-4~bpo12+2",
"0.0~20240729.0-5",
"0.0~20240729.0-6",
"0.0~20240729.0-7"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95702.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-gvisor-gvisor",
"purl": "pkg:deb/debian/golang-gvisor-gvisor?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.0~20240729.0-4",
"0.0~20240729.0-5",
"0.0~20240729.0-6",
"0.0~20240729.0-7"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95702.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-gvisor-gvisor",
"purl": "pkg:deb/debian/golang-gvisor-gvisor?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.0~20240729.0-4",
"0.0~20240729.0-5",
"0.0~20240729.0-6",
"0.0~20240729.0-7"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-95702.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-16T09:47:36.733986980Z",
"provider": "osv",
"upstream": [
"CVE-2026-95702"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-95702"
]
},
"related_cves": [
{
"value": "CVE-2026-95702",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 338671,
"published_at": "2026-10-09T15:17:20.447+00:00"
}