CVE-2026-17572

Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a nummessages count exceeding listmax, triggering out-of-bounds heap reads and writes in H5SMcachelistdeserialize and H5SMcachelistverify_chksum.

Database specific

{
    "cna_assigner": "HDFG",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17572.json",
    "cwe_ids": [
        "CWE-125",
        "CWE-787"
    ]
}

References

Affected packages

Git / github.com/hdfgroup/hdf5

Affected ranges

Type

GIT

Repo

https://github.com/hdfgroup/hdf5

Events

Introduced

577c192518598c7e2945683655feffcdbdf5a91b

Fixed

4fde4fd787744b6a19b12032f4dad0383fbe6fbd

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.1.1"
        },
        {
            "introduced": "HDF5"
        },
        {
            "fixed": "2.1.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-17572.json"