Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile
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.
CVE-2026-95702
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-95702
gVisor
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/google/gvisor",
"vendor": "Google",
"product": "gVisor",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "20260831.0",
"versionType": "semver"
}
],
"platforms": [
"Linux"
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-95702
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #30017 · Revision 1
- Added to Heist Feed
- Publisher date