USN-8779-2

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Source
https://ubuntu.com/security/notices/USN-8779-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8779-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8779-2
Published
2026-09-17T22:20:14Z
Modified
2026-09-18T06:00:03Z
Summary
bubblewrap regression
Details

USN-8779-1 fixed vulnerabilities in Bubblewrap. Unfortunately, the fix for CVE-2026-87766 introduced a regression in symlink resolution, preventing certain Flatpak applications from launching. This update reverts that fix until a complete fix is available.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Bubblewrap incorrectly handled certain temporary directories. A local attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-12439)

It was discovered that Bubblewrap incorrectly handled certain symlinks during sandbox setup. A local attacker could possibly use this issue to create files outside of the sandbox. (CVE-2026-87766)

References

Affected packages

Ubuntu:Pro:18.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.2.1-1ubuntu0.1+esm3

Affected versions

0.*
0.2.0-1
0.2.0-2
0.2.0-4
0.2.1-1
0.2.1-1ubuntu0.1
0.2.1-1ubuntu0.1+esm2

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.2.1-1ubuntu0.1+esm3"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [],
    "ecosystem":  "Ubuntu:Pro:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8779-2.json"

Ubuntu:Pro:20.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.4.0-1ubuntu4.1+esm3

Affected versions

0.*
0.3.3-2
0.4.0-1
0.4.0-1ubuntu1
0.4.0-1ubuntu2
0.4.0-1ubuntu3
0.4.0-1ubuntu4
0.4.0-1ubuntu4.1
0.4.0-1ubuntu4.1+esm2

Ecosystem specific 

{
    "availability":  "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.4.0-1ubuntu4.1+esm3"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [],
    "ecosystem":  "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8779-2.json"

Ubuntu:22.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.6.1-1ubuntu0.3

Affected versions

0.*
0.4.1-3build1
0.5.0-1
0.6.0-1
0.6.1-1
0.6.1-1ubuntu0.1
0.6.1-1ubuntu0.2

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.6.1-1ubuntu0.3"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [],
    "ecosystem":  "Ubuntu:22.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8779-2.json"

Ubuntu:24.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.9.0-1ubuntu0.3

Affected versions

0.*
0.8.0-2
0.9.0-1build1
0.9.0-1ubuntu0.1
0.9.0-1ubuntu0.2

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.9.0-1ubuntu0.3"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [],
    "ecosystem":  "Ubuntu:24.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8779-2.json"

Ubuntu:26.04:LTS / bubblewrap

Package

Name
bubblewrap
Purl
pkg:deb/ubuntu/bubblewrap?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.11.1-1ubuntu0.3

Affected versions

0.*
0.11.0-2
0.11.0-2build1
0.11.1-1
0.11.1-1ubuntu0.1
0.11.1-1ubuntu0.2

Ecosystem specific 

{
    "availability":  "No subscription required",
    "binaries":  [
        {
            "binary_name":  "bubblewrap",
            "binary_version":  "0.11.1-1ubuntu0.3"
        }
    ]
}

Database specific

cves_map 
{
    "cves":  [],
    "ecosystem":  "Ubuntu:26.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8779-2.json"