CVE-2026-95702
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-95702- CVSS 4.0
- 8.5 High
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 - Weakness
- CWE-416, CWE-415
- Updated
- 2026-11-02
EUVDEUVD-2026-95816
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.
- Record
EUVD-2026-95816- CVSS 4.0
- 8.5 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hv4v-f9v2-r8c2
Use-after-free vulnerability in VFS in Google gVisor prior to release 20260831.0 on all platforms...
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.
- Record
GHSA-hv4v-f9v2-r8c2- CVSS 4.0
- 8.5 High
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 - Weakness
- CWE-415
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-95702- CVSS 4.0
- 8.5 High
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 - Weakness
- CWE-415, CWE-416
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2026-95702- CVSS 4.0
- 8.5 High
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 - Weakness
- CWE-415, CWE-416
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2026-95702
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.
- Record
DEBIAN-CVE-2026-95702- CVSS 4.0
- 8.5 High
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 - Updated
- 2026-11-07
OSVUBUNTU-CVE-2026-95702
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.
- Record
UBUNTU-CVE-2026-95702- CVSS 4.0
- 8.5 High
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 - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
golang-gvisor-gvisorDebian:12 |
All versions, plus listed versions 0.0~20221219.0-20.0~20230807.0-10.0~20230807.0-20.0~20230807.0-30.0~20230807.0-4 Show 14 moreShow less0.0~20230807.0-4~bpo12+10.0~20230807.0-50.0~20240729.0-10.0~20240729.0-20.0~20240729.0-30.0~20240729.0-40.0~20240729.0-4~bpo12+10.0~20240729.0-4~bpo12+20.0~20240729.0-50.0~20240729.0-60.0~20240729.0-70.0~20261026.0-10.0~20261026.0-20.0~20261026.0-3 |
None known |
golang-gvisor-gvisorDebian:13 |
All versions, plus listed versions 0.0~20240729.0-40.0~20240729.0-50.0~20240729.0-60.0~20240729.0-70.0~20261026.0-10.0~20261026.0-20.0~20261026.0-3 |
None known |
golang-gvisor-gvisorDebian:14 |
before 0.0~20261026.0-1, plus listed versions 0.0~20240729.0-40.0~20240729.0-50.0~20240729.0-60.0~20240729.0-7 |
0.0~20261026.0-1 |
golang-gvisor-gvisorUbuntu:24.04:LTS |
All versions, plus listed versions 0.0~20230807.0-4build10.0~20230807.0-4ubuntu0.24.04.10.0~20230807.0-4ubuntu0.24.04.20.0~20230807.0-4ubuntu0.24.04.3 |
None known |
golang-gvisor-gvisorUbuntu:26.10 |
All versions, plus listed versions 0.0~20240729.0-7 |
None known |
golang-gvisor-gvisorUbuntu:26.04:LTS |
All versions, plus listed versions 0.0~20240729.0-40.0~20240729.0-50.0~20240729.0-7 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-95702 is a high vulnerability (CVSS 8.5) in Google Gvisor, published October 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.08%, the 0th percentile. Fixed in golang-gvisor-gvisor 0.0~20261026.0-1.
References
github.com/google/gvisor/commit/90bc4fc36fe442257a06ba15df00371561c183ed
nvd.nist.gov/vuln/detail/CVE-2026-95702