What is GHSA-w2vw-9w6r-w7mm?

GHSA-w2vw-9w6r-w7mm is a security advisory published by GitHub Security Advisories with Low severity. Untrusted pointer dereference in the render_bin_output function in the h5dump tool in HDF5 before...

Which CVE IDs does GHSA-w2vw-9w6r-w7mm cover?

GHSA-w2vw-9w6r-w7mm covers the following CVE IDs: CVE-2026-19023. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-w2vw-9w6r-w7mmLow

Untrusted pointer dereference in the render_bin_output function in the h5dump tool in HDF5 before...

Vendor

GitHub Security Advisories

Published

August 6, 2026

Last Modified

August 6, 2026

🔗 CVE IDs covered (1)

CVE-2026-19023 →

📋 Description

Untrusted pointer dereference in the render_bin_output function in the h5dump tool in HDF5 before 2.1.1 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes subsequent elements to be read from a misaligned offset and dereferenced as a pointer.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-19023
https://github.com/HDFGroup/hdf5/issues/6486
https://github.com/advisories/GHSA-w2vw-9w6r-w7mm