{"id":"CVE-2026-17572","summary":"HDF5 SOHM List Index Heap Buffer Overflow","details":"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 num_messages count exceeding list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.","modified":"2026-08-20T03:34:20.917181900Z","published":"2026-07-27T15:11:36.949Z","database_specific":{"cna_assigner":"HDFG","cwe_ids":["CWE-125","CWE-787"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17572.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/17xxx/CVE-2026-17572.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-17572"},{"type":"REPORT","url":"https://github.com/HDFGroup/hdf5/issues/6501"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hdfgroup/hdf5","events":[{"introduced":"0"},{"fixed":"49df1b4e5ca4108d56e80f06321a749da1535268"}],"database_specific":{"cpe":"cpe:2.3:a:hdfgroup:hdf5:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"2.1.1"},{"fixed":"2.2.0"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["2.2.0-rc1","snapshot-2.2.0-rc1","final_autotools_develop","snapshot","hdf5-1_13_0-rc6","hdf5-1_13_0-rc5","hdf5-1_13_0-rc4","hdf5-1_13_0-rc3","hdf5-1_13_0-rc2","hdf5-1_13_0-rc1","vms_last_support_trunk","before_removing_mpiposix_vfd","hdf5-1_9-start","hdf5-1_8_0-beta5","hdf5-1_8_0-beta4","hdf5-1_8_0-beta3","hdf5-1_8_0-beta2","hdf5-1_8_0-beta1","hdf5-1_8_0-alpha4","hdf5-1_8_0-alpha3","hdf5-1_8_0-alpha2","before_removing_fphdf5","before_removing_docs","before_removing_tbbt_code","before_signed_unsigned_changes","hdf5-1_6_2","hdf5-1_6_1","hdf5-1_6_0","hdf5-1_4_0","hdf5-1_4_1","hdf5-1_3_1","hdf5-1_3_0","hdf5-1_2_1","hdf5-1_2_0beta","hdf5-1_2_0-beta1-update2","hdf5-1_2_0","hdf5-1_0_1","hdf5-1_0_0","r1_1beta1","hdf5-1_0_0-alpha2","proto1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-17572.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:U"}]}