CVE-2026-19023

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 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...

UBUNTU-CVE-2026-19026

H5Zfilternbit in H5Znbit.c in HDF5 through 2.3.0 dereferences cdvalues0 through cdvalues4 without validating that cdvalues is non-NULL or that cdnelmts is at least 5, the fixed size of the filter's header. This allows attackers to cause a denial of service via a crafted HDF5 file that stores the...

CVE-2026-19028

The CVE-2026-19028 vulnerability affects HDF5 up to version 2.3.0, specifically the H5Z__filter_fletcher32 function in H5Zfletcher32.c. The data length used for the checksum is computed by subtracting the 4-byte trailing checksum from the input buffer size without verifying that the buffer is at ...

CVE-2026-19028 HDF5 integer underflow in Fletcher32 filter leads to massive out-of-bounds read

H5Zfilterfletcher32 in H5Zfletcher32.c in HDF5 through 2.3.0 computes the data length to checksum by subtracting the 4-byte trailing checksum size from the input buffer size without checking that the buffer is at least 4 bytes, allowing a sizet underflow. This allows attackers to cause a denial o...

CVE-2026-19027

The CVE-2026-19027 entry describes an out-of-bounds heap read in HDF5 before 2.3.0 due to the N-Bit filter decompression routines. Specifically, H5Z__nbit_decompress_one_byte, H5Z__nbit_decompress_one_nooptype, and H5Z__nbit_decompress_one_atomic in H5Znbit.c advance a read index into the compres...

CVE-2026-19027

The H5Znbitdecompressonebyte, H5Znbitdecompressonenooptype, and H5Znbitdecompressoneatomic functions in H5Znbit.c in HDF5 through 2.3.0 advance a read index into the compressed chunk buffer without bounding it against the buffer's actual size. This allows attackers to cause an out-of-bounds heap...

CVE-2026-19027 HDF5 out-of-bounds heap read in N-Bit filter decompression

The H5Znbitdecompressonebyte, H5Znbitdecompressonenooptype, and H5Znbitdecompressoneatomic functions in H5Znbit.c in HDF5 through 2.3.0 advance a read index into the compressed chunk buffer without bounding it against the buffer's actual size. This allows attackers to cause an out-of-bounds heap...

CVE-2026-19026

The CVE-2026-19026 issue affects HDF5 up to v2.3.0, specifically H5Z__filter_nbit in H5Znbit.c. The code dereferences cd_values[0] through cd_values[4] without verifying that cd_values is non-NULL or that cd_nelmts >= 5, exploiting the fixed size of the filter header. This can cause a denial o...

CVE-2026-19025

The CVE-2026-19025 entry concerns HDF5 versions up to 2.3.0. It describes a flaw in H5O__layout_decode within H5Olayout.c where a chunked dataset’s stored chunk-layout dimensionality is not validated against its dataspace rank when an existing dataset is opened (validation exists only at dataset ...

CVE-2026-19023

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 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...

CVE-2026-19023 HDF5 h5dump Untrusted Pointer Dereference in Binary Output of Variable-Length String Datasets

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 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...

CVE-2026-9335

CVE-2026-9335 concerns keras-team/keras ≤ 3.14.0, where improper handling of HDF5 ExternalLinks in ExternalLink resolution allows arbitrary local HDF5 file content disclosure. The vulnerability arises because KerasFileEditor and keras.saving.load_weights bypass safe_get_h5_group and safe_get_h5_d...

Linux Distros Unpatched Vulnerability : CVE-2026-9335

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A vulnerability in keras-team/keras versions = 3.14.0 allows arbitrary local HDF5 file content disclosure due to improper handling of HDF5 ExternalLinks. The...

SUSE CVE-2026-17573

A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free...

SUSE CVE-2026-17574

HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file containing an attribute with an invalid variable-length datatype type field may cause the application to crash when the attribute is read...

CVE-2026-17572

A flaw was found in HDF5, a data management library. This vulnerability, a heap-based buffer overflow, allows a local attacker to cause a denial of service DoS by persuading a user to open a specially crafted HDF5 file. The malformed file can trigger out-of-bounds memory operations, leading to...

CVE-2026-17574

A flaw was found in HDF5. A local user can exploit this vulnerability by processing a specially crafted HDF5 file. This file, containing an attribute with an invalid variable-length datatype, can cause a NULL pointer dereference, leading to an application crash and resulting in a denial of servic...

DEBIAN-CVE-2026-17572

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 nummessages count exceeding listmax, triggering out-of-bounds heap...

UBUNTU-CVE-2026-17573

A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free...

CVE-2026-17574

HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file containing an attribute with an invalid variable-length datatype type field may cause the application to crash when the attribute is read...