{"id":"CVE-2026-95702","aliases":["DEBIAN-CVE-2026-95702","EUVD-2026-95816","GHSA-hv4v-f9v2-r8c2","UBUNTU-CVE-2026-95702"],"status":"published","title":"Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile","description":"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.","severity":{"version":"4.0","score":8.5,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00084,"percentile":0.00241,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-415","CWE-416"],"published":"2026-10-09T14:44:35Z","modified":"2026-11-07T06:00:10Z","fixes":[{"ecosystem":"Debian:14","package":"golang-gvisor-gvisor","fixed_in":["0.0~20261026.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"golang-gvisor-gvisor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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","0.0~20261026.0-1","0.0~20261026.0-2","0.0~20261026.0-3"]},{"source":"osv","ecosystem":"Debian:13","package":"golang-gvisor-gvisor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~20240729.0-4","0.0~20240729.0-5","0.0~20240729.0-6","0.0~20240729.0-7","0.0~20261026.0-1","0.0~20261026.0-2","0.0~20261026.0-3"]},{"source":"osv","ecosystem":"Debian:14","package":"golang-gvisor-gvisor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0~20261026.0-1"}]}],"versions":["0.0~20240729.0-4","0.0~20240729.0-5","0.0~20240729.0-6","0.0~20240729.0-7"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"golang-gvisor-gvisor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~20230807.0-4build1","0.0~20230807.0-4ubuntu0.24.04.1","0.0~20230807.0-4ubuntu0.24.04.2","0.0~20230807.0-4ubuntu0.24.04.3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"golang-gvisor-gvisor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~20240729.0-7"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"golang-gvisor-gvisor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~20240729.0-4","0.0~20240729.0-5","0.0~20240729.0-7"]}],"products":[{"vendor":"google","product":"gvisor"}],"references":[{"url":"https://github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed","tags":["fix","report"]},{"url":"https://github.com/google/gvisor/commit/25c75149bc0eeaa6a3a49b9bbe3473588b2af6df","tags":["fix","report"]},{"url":"https://github.com/google/gvisor/commit/e4efb89c787ef15b09e68d561f1303380e1d5a77","tags":["fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95702","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hv4v-f9v2-r8c2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/95xxx/CVE-2026-95702.json","tags":["advisory"]},{"url":"https://github.com/google/gvisor","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-95702","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-95702","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-95702","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-95702","title":"Code Execution in Host Sentry Process via Double Free in gVisor VFS MemoryFile","description":"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. 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