UBUNTU-CVE-2026-95702

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Source
https://ubuntu.com/security/CVE-2026-95702
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-95702.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-95702
Upstream
Published
2026-10-13T00:00:00Z
Modified
2026-10-14T03:23:48Z
Severity
  • 8.5 (High) CVSS_V4 - 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 CVSS Calculator
  • Ubuntu - medium
Summary
[none]
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.

References

Affected packages

Ubuntu:24.04:LTS / golang-gvisor-gvisor

Package

Name
golang-gvisor-gvisor
Purl
pkg:deb/ubuntu/golang-gvisor-gvisor?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
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

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-gvisor-gvisor-dev",
            "binary_version":  "0.0~20230807.0-4ubuntu0.24.04.3"
        },
        {
            "binary_name":  "runsc",
            "binary_version":  "0.0~20230807.0-4ubuntu0.24.04.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-95702.json"

Ubuntu:26.04:LTS / golang-gvisor-gvisor

Package

Name
golang-gvisor-gvisor
Purl
pkg:deb/ubuntu/golang-gvisor-gvisor?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.0~20240729.0-4
0.0~20240729.0-5
0.0~20240729.0-7

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "golang-gvisor-gvisor-dev",
            "binary_version":  "0.0~20240729.0-7"
        },
        {
            "binary_name":  "runsc",
            "binary_version":  "0.0~20240729.0-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-95702.json"