ubuntu-cve-2026-34734
Vulnerability from osv_ubuntu
Published
2026-04-09 20:16
Modified
2026-06-30 16:20
Summary
Details
HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.
Severity
7.8 (High)
7.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
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{
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},
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}
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}
],
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},
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]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "hdf5",
"purl": "pkg:deb/ubuntu/hdf5@1.14.6+repack-2?arch=source\u0026distro=resolute"
},
"ranges": [
{
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],
"aliases": [],
"details": "HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.",
"id": "UBUNTU-CVE-2026-34734",
"modified": "2026-06-30T16:20:56Z",
"published": "2026-04-09T20:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-34734"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-34734"
},
{
"type": "REPORT",
"url": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-34734"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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