{"id":"CVE-2026-19029","title":"A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file","summary":"A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-125"],"vendor":"The HDF Group","product":"HDF5","affected":["HDF5 < 2.2.0"],"published":"2026-10-06","updated":"2026-10-07","sourceUpdated":"2026-10-07T17:16:54.353","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-19029","references":[{"url":"https://github.com/HDFGroup/hdf5/pull/6718","label":"0253b833-3e77-4dfe-9d57-17db1a2f0a74"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19029.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-19029"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2547140"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-19029"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19029"},{"url":"https://access.redhat.com/errata/RHSA-2026:73539"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-07T16:04:23.864171Z"},"cvssSource":"cna","epss":0.00118,"epssPercentile":0.01701,"ingestedAt":"2026-10-06T21:20:28.989Z","patched":["hardened_images"],"scores":{"cna":6.8,"vendor":5.5},"slug":"CVE-2026-19029","body":"## Overview\n\nA heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk holds that many bytes. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:73539** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:73539)","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":37.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}