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    2 vulnerabilities found for Szip Filter by The HDF Group

    CVE-2026-120755 (GCVE-0-2026-120755)

    Vulnerability from nvd – Published: 2026-11-03 15:27 – Updated: 2026-11-03 15:43
    VLAI
    Title
    Integer Underflow Leads to Out-of-Bounds Read via Truncated Chunk in HDF5 Szip Filter
    Summary
    HDF5 through 2.2.0 contains an out-of-bounds read vulnerability in H5Z__filter_szip() in src/H5Zszip.c. When decoding a szip-compressed chunk, the function subtracts the 4-byte uncompressed-length header from the chunk length without first verifying that the chunk is at least 4 bytes long. A truncated or corrupted chunk shorter than the header causes the length calculation to wrap around to a very large value, and the decompressor reads far past the end of the chunk buffer. An attacker who can get a user or application to read a dataset from a crafted HDF5 file can cause a denial of service. Only builds with szip support (libaec or the szip library) are affected.
    Severity
    4.7 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-03 15:43 UTC
    CWE
    Assigner
    HDFG CNA under the redhat root
    CNA scorecard C 72/100 over 18 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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    CVE-2026-120755 (GCVE-0-2026-120755)

    Vulnerability from cvelistv5 – Published: 2026-11-03 15:27 – Updated: 2026-11-03 15:43
    VLAI
    Title
    Integer Underflow Leads to Out-of-Bounds Read via Truncated Chunk in HDF5 Szip Filter
    Summary
    HDF5 through 2.2.0 contains an out-of-bounds read vulnerability in H5Z__filter_szip() in src/H5Zszip.c. When decoding a szip-compressed chunk, the function subtracts the 4-byte uncompressed-length header from the chunk length without first verifying that the chunk is at least 4 bytes long. A truncated or corrupted chunk shorter than the header causes the length calculation to wrap around to a very large value, and the decompressor reads far past the end of the chunk buffer. An attacker who can get a user or application to read a dataset from a crafted HDF5 file can cause a denial of service. Only builds with szip support (libaec or the szip library) are affected.
    Severity
    4.7 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-11-03 15:43 UTC
    CWE
    Assigner
    HDFG CNA under the redhat root
    CNA scorecard C 72/100 over 18 records in the last 180 days details
    References
    Impacted products
    Show details on NVD website
    To clipboard 

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