Upstream information
Description
HDF5 through 2.2.0 contains an uncontrolled recursion vulnerability in H5B__iterate_helper() in src/H5B.c. When iterating a version 1 B-tree, the function does not verify that a child node's level matches the expected level. That check is performed only in H5B__cache_deserialize() when a node is first loaded into the metadata cache. A crafted HDF5 file whose B-tree child pointer refers back to a node already in the cache, such as a node that points to itself, bypasses the check and causes unbounded recursion, leading to stack exhaustion and a crash. This can be triggered by calling H5Gget_info() or H5Gget_num_objs() on a group in the crafted file, which reaches H5B_iterate() through H5G__obj_info() and H5G__stab_count(). An attacker who can get a user or application to open a malicious file can cause a denial of service.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | SUSE |
|---|---|
| Base Score | 5.5 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
| CVSS detail | CNA (0253b833-3e77-4dfe-9d57-17db1a2f0a74) | SUSE |
|---|---|---|
| Base Score | 4.3 | 4.3 |
| Vector | 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/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | 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/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Attack Requirements | None | None |
| Privileges Required | None | None |
| User Interaction | Passive | Passive |
| Vulnerable System Confidentiality Impact | None | None |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | High | High |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Module for Package Hub 15 SP7 | hdf5 | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP5 | hdf5 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | hdf5 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | hdf5 | Affected |
| SUSE Linux Enterprise Module for HPC 12 | hdf5 | Affected |
| SUSE Linux Enterprise Server 12 SP5 | hdf5 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | hdf5 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP5 | hdf5 | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise High Performance Computing 12 SP2 | hdf5 | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP3 | hdf5 | Affected |
| SUSE Linux Enterprise High Performance Computing 12 SP4 | hdf5 | Affected |
| SUSE Linux Enterprise Server 12 SP2 | hdf5 | Affected |
| SUSE Linux Enterprise Server 12 SP3 | hdf5 | Affected |
| SUSE Linux Enterprise Server 12 SP4 | hdf5 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | hdf5 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | hdf5 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | hdf5 | Affected |
SUSE Timeline for this CVE
CVE page created: Tue Nov 3 12:58:30 2026CVE page last modified: Tue Nov 3 15:57:34 2026