Medium [CVE-2026-17573] HDF5 library: Denial of Service via crafted HDF5 file processing
This medium-severity Red Hat Linux advisory covers CVE-2026-17573 affecting Red Hat Hardened Images, Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3.
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Summary
A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free.
This could cause the application to unexpectedly terminate, leading to a denial of service. This Moderate severity flaw in the HDF5 library can lead to a denial of service.
It requires a local attacker to trick a user into processing a specially crafted HDF5 file with the `h5repack` utility, which could cause the application to crash due to a double free vulnerability. Red Hat severity: Moderate — CVSS 5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H).
Weakness: CWE-763. Affected Red Hat products: Red Hat Hardened Images; Red Hat AI Inference Server; Red Hat Enterprise Linux AI (RHEL AI) 3; Red Hat OpenShift AI (RHOAI).
Red Hat fixing advisory: RHSA-2026:61630.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 27 days ago·verify at source
- hdf5-main-2.2.0-0.1.1.hum1
- RHSA-2026:61630
Official advisory · high-confidence parse· fetched 27 days ago·verify at source
Mitigation
Upgrade to a fixed release: hdf5-main-2.2.0-0.1.1.hum1, RHSA-2026:61630. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 27 days ago·verify at source
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