UBUNTU-CVE-2026-120754

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Source
https://ubuntu.com/security/CVE-2026-120754
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-120754
Upstream
Published
2026-11-03T16:17:00Z
Modified
2026-11-05T11:47:28Z
Severity
  • 1.9 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

HDF5 through 2.2.0 contains an uninitialized memory read vulnerability in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c. The decode path validates reads against the allocated size of the chunk buffer rather than the number of bytes actually read from the file. Because H5D__chunk_lock() deliberately sizes filtered chunk buffers to the larger of the stored and unfiltered chunk sizes and fills only the stored bytes, a truncated chunk passes these bounds checks and is decompressed from the uninitialized remainder of the allocation. Unrelated heap contents are then returned to the caller as dataset data. Because the reads remain within the allocation, the issue is not detected by AddressSanitizer. An attacker who can get a user or application to read a dataset from a crafted HDF5 file can cause disclosure of process memory. This issue exists because of an incomplete fix for CVE-2026-19029.

References

Affected packages

Ubuntu:22.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.10.6+repack-5
1.10.7+repack-4ubuntu1
1.10.7+repack-4ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-103",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-103-1",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-cpp-103",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-cpp-103-1",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-fortran-102",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-hl-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-hl-cpp-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-hl-fortran-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-java",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-jni",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-103",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-103-1",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-cpp-103-1",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-fortran-102",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-hl-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-hl-cpp-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-mpich-hl-fortran-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-103",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-103-1",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-cpp-103-1",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-fortran-102",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-cpp-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-fortran-100",
            "binary_version": "1.10.7+repack-4ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:24.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.10.8+repack1-1ubuntu1
1.10.10+repack-3ubuntu1
1.10.10+repack-3.1ubuntu3
1.10.10+repack-3.1ubuntu4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-103-1t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-cpp-103-1t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-fortran-102t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-hl-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-hl-cpp-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-hl-fortran-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-java",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-jni",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-mpich-103-1t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-mpich-cpp-103-1t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-mpich-fortran-102t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-mpich-hl-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-mpich-hl-cpp-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-mpich-hl-fortran-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-openmpi-103-1t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-openmpi-cpp-103-1t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-openmpi-fortran-102t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-cpp-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-fortran-100t64",
            "binary_version": "1.10.10+repack-3.1ubuntu4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:26.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.14.5+repack-3build1
1.14.5+repack-4
1.14.6+repack-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-cpp-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-fortran-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-hl-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-hl-cpp-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-hl-fortran-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-java",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-jni",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-mpich-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-mpich-cpp-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-mpich-fortran-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-mpich-hl-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-mpich-hl-cpp-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-mpich-hl-fortran-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-openmpi-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-openmpi-cpp-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-openmpi-fortran-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-cpp-310",
            "binary_version": "1.14.6+repack-2"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-fortran-310",
            "binary_version": "1.14.6+repack-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:26.10
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=stonking

Affected ranges

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

Affected versions

1.*
1.14.6+repack-2
2.*
2.2.0+repack-4
2.2.0+repack-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-cpp-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-fortran-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-hl-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-hl-cpp-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-hl-fortran-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-java",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-jni",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-mpich-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-mpich-cpp-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-mpich-fortran-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-mpich-hl-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-mpich-hl-cpp-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-mpich-hl-fortran-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-openmpi-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-openmpi-cpp-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-openmpi-fortran-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-cpp-320",
            "binary_version": "2.2.0+repack-5"
        },
        {
            "binary_name": "libhdf5-openmpi-hl-fortran-320",
            "binary_version": "2.2.0+repack-5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:Pro:14.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

1.*
1.8.11-3ubuntu1
1.8.11-5ubuntu1
1.8.11-5ubuntu2
1.8.11-5ubuntu6
1.8.11-5ubuntu7
1.8.11-5ubuntu7.1
1.8.11-5ubuntu7.1+esm1
1.8.11-5ubuntu7.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.8.11-5ubuntu7.1+esm2"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.8.11-5ubuntu7.1+esm2"
        },
        {
            "binary_name": "libhdf5-7",
            "binary_version": "1.8.11-5ubuntu7.1+esm2"
        },
        {
            "binary_name": "libhdf5-mpich2-7",
            "binary_version": "1.8.11-5ubuntu7.1+esm2"
        },
        {
            "binary_name": "libhdf5-openmpi-7",
            "binary_version": "1.8.11-5ubuntu7.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:Pro:16.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1.*
1.8.15-patch1+docs-4
1.8.15-patch1+docs-5
1.8.16+docs-1
1.8.16+docs-2
1.8.16+docs-3
1.8.16+docs-3ubuntu1
1.8.16+docs-4
1.8.16+docs-4ubuntu1
1.8.16+docs-4ubuntu1.1
1.8.16+docs-4ubuntu1.1+esm1
1.8.16+docs-4ubuntu1.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.8.16+docs-4ubuntu1.1+esm2"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.8.16+docs-4ubuntu1.1+esm2"
        },
        {
            "binary_name": "libhdf5-10",
            "binary_version": "1.8.16+docs-4ubuntu1.1+esm2"
        },
        {
            "binary_name": "libhdf5-cpp-11",
            "binary_version": "1.8.16+docs-4ubuntu1.1+esm2"
        },
        {
            "binary_name": "libhdf5-mpich-10",
            "binary_version": "1.8.16+docs-4ubuntu1.1+esm2"
        },
        {
            "binary_name": "libhdf5-openmpi-10",
            "binary_version": "1.8.16+docs-4ubuntu1.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:Pro:18.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
1.10.0-patch1+docs-4
1.10.0-patch1+docs-4ubuntu0.1~esm1
1.10.0-patch1+docs-4ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "libhdf5-100",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "libhdf5-cpp-100",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "libhdf5-java",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "libhdf5-jni",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "libhdf5-mpich-100",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        },
        {
            "binary_name": "libhdf5-openmpi-100",
            "binary_version": "1.10.0-patch1+docs-4ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"
Ubuntu:Pro:20.04:LTS
hdf5

Package

Name
hdf5
Purl
pkg:deb/ubuntu/hdf5?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1.*
1.10.4+repack-10
1.10.4+repack-11
1.10.4+repack-11ubuntu1
1.10.4+repack-11ubuntu1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "hdf5-helpers",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "hdf5-tools",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "libhdf5-103",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "libhdf5-cpp-103",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "libhdf5-java",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "libhdf5-jni",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "libhdf5-mpich-103",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        },
        {
            "binary_name": "libhdf5-openmpi-103",
            "binary_version": "1.10.4+repack-11ubuntu1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120754.json"