https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Wed, 30 Sep 2026 21:48:43 +0000 https://vulnerability.circl.lu/vuln/fkie_cve-2026-19028 <p>H5Z__filter_fletcher32 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 size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.</p> <p>H5Z__filter_fletcher32 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 size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-19028 https://vulnerability.circl.lu/vuln/ghsa-2hg9-348w-39gj <p>H5Z__filter_fletcher32 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 size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.</p> <p>H5Z__filter_fletcher32 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 size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.</p> https://vulnerability.circl.lu/vuln/ghsa-2hg9-348w-39gj https://vulnerability.circl.lu/vuln/msrc_cve-2026-19028 msrc_CVE-2026-19028 https://vulnerability.circl.lu/vuln/msrc_cve-2026-19028 https://vulnerability.circl.lu/vuln/rhsa-2026:73539 <p>hdf5: HDF5: Denial of service via crafted HDF5 file hdf5: HDF5: Information disclosure and denial of service via crafted HDF5 file hdf5: HDF5: Denial of Service via integer underflow in Fletcher32 filter</p> <p>hdf5: HDF5: Denial of service via crafted HDF5 file hdf5: HDF5: Information disclosure and denial of service via crafted HDF5 file hdf5: HDF5: Denial of Service via integer underflow in Fletcher32 filter</p> https://vulnerability.circl.lu/vuln/rhsa-2026:73539 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-19028 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: hdf5, Ubuntu:Pro:16.04:LTS: hdf5, Ubuntu:Pro:18.04:LTS: hdf5, Ubuntu:Pro:20.04:LTS: hdf5, Ubuntu:22.04:LTS: hdf5, Ubuntu:24.04:LTS: hdf5, Ubuntu:26.04:LTS: hdf5</p> <p>H5Z__filter_fletcher32 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 size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: hdf5, Ubuntu:Pro:16.04:LTS: hdf5, Ubuntu:Pro:18.04:LTS: hdf5, Ubuntu:Pro:20.04:LTS: hdf5, Ubuntu:22.04:LTS: hdf5, Ubuntu:24.04:LTS: hdf5, Ubuntu:26.04:LTS: hdf5</p> <p>H5Z__filter_fletcher32 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 size_t underflow. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-19028