Upstream information
Description
HDF5 through 2.2.0 contains an uninitialized memory read vulnerability in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c. The decode path validates reads against the allocated size of the chunk buffer rather than the number of bytes actually read from the file. Because H5D__chunk_lock() deliberately sizes filtered chunk buffers to the larger of the stored and unfiltered chunk sizes and fills only the stored bytes, a truncated chunk passes these bounds checks and is decompressed from the uninitialized remainder of the allocation. Unrelated heap contents are then returned to the caller as dataset data. Because the reads remain within the allocation, the issue is not detected by AddressSanitizer. An attacker who can get a user or application to read a dataset from a crafted HDF5 file can cause disclosure of process memory. This issue exists because of an incomplete fix for CVE-2026-19029.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having low severity.
| CVSS detail | National Vulnerability Database | SUSE |
|---|---|---|
| Base Score | 3.3 | 3.3 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | Required | Required |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | Low | Low |
| Integrity Impact | None | None |
| Availability Impact | None | None |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | CNA (0253b833-3e77-4dfe-9d57-17db1a2f0a74) | SUSE |
|---|---|---|
| Base Score | 1.9 | 1.9 |
| Vector | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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 | Low | Low |
| Vulnerable System Integrity Impact | None | None |
| Vulnerable System Availability Impact | None | None |
| 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: Wed Nov 4 14:55:22 2026CVE page last modified: Wed Nov 4 17:54:47 2026