UBUNTU-CVE-2026-111133

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Source
https://ubuntu.com/security/CVE-2026-111133
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111133.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-111133
Upstream
Published
2026-10-16T00:00:00Z
Modified
2026-10-17T12:59:52Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libfsapfs through 20260921 contains an integer underflow in libfsapfs_key_encrypted_key_read_data() that allows attackers to trigger heap out-of-bounds reads via crafted KEK attributes. Attackers can supply a crafted encrypted APFS image with malformed HMAC or wrapped KEK attribute lengths to crash fsapfsinfo, pyfsapfs, dfVFS or plaso and read adjacent heap memory before password checks.

References

Affected packages

Ubuntu:20.04:LTS / libfsapfs

Package

Name
libfsapfs
Purl
pkg:deb/ubuntu/libfsapfs?arch=source&distro=focal

Affected ranges

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

Affected versions

Other
20190210-1
20190210-1build1
20190210-1ubuntu1
20190210-1.*
20190210-1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libfsapfs-utils",
            "binary_version":  "20190210-1.1"
        },
        {
            "binary_name":  "libfsapfs1",
            "binary_version":  "20190210-1.1"
        },
        {
            "binary_name":  "python3-fsapfs",
            "binary_version":  "20190210-1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111133.json"

Ubuntu:22.04:LTS / libfsapfs

Package

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

Affected ranges

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

Affected versions

Other
20201107-1
20201107-1build1
20201107-1build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libfsapfs-utils",
            "binary_version":  "20201107-1build2"
        },
        {
            "binary_name":  "libfsapfs1",
            "binary_version":  "20201107-1build2"
        },
        {
            "binary_name":  "python3-fsapfs",
            "binary_version":  "20201107-1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111133.json"

Ubuntu:24.04:LTS / libfsapfs

Package

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

Affected ranges

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

Affected versions

Other
20201107-1build3
20201107-1build4
20201107-1.*
20201107-1.1
20201107-1.1build1
20201107-1.1build2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libfsapfs-utils",
            "binary_version":  "20201107-1.1build2"
        },
        {
            "binary_name":  "libfsapfs1t64",
            "binary_version":  "20201107-1.1build2"
        },
        {
            "binary_name":  "python3-fsapfs",
            "binary_version":  "20201107-1.1build2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111133.json"

Ubuntu:26.10 / libfsapfs

Package

Name
libfsapfs
Purl
pkg:deb/ubuntu/libfsapfs?arch=source&distro=stonking

Affected ranges

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

Affected versions

Other
20240429-2ubuntu1
20240429-2ubuntu2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libfsapfs-utils",
            "binary_version":  "20240429-2ubuntu2"
        },
        {
            "binary_name":  "libfsapfs1t64",
            "binary_version":  "20240429-2ubuntu2"
        },
        {
            "binary_name":  "python3-fsapfs",
            "binary_version":  "20240429-2ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111133.json"

Ubuntu:26.04:LTS / libfsapfs

Package

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

Affected ranges

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

Affected versions

Other
20240429-1ubuntu1
20240429-2ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libfsapfs-utils",
            "binary_version":  "20240429-2ubuntu1"
        },
        {
            "binary_name":  "libfsapfs1t64",
            "binary_version":  "20240429-2ubuntu1"
        },
        {
            "binary_name":  "python3-fsapfs",
            "binary_version":  "20240429-2ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111133.json"