CVE-2026-19029— HDF5 scale-offset filter heap buffer over-read via crafted chunk
Quick assessment
Affected
The HDF Group HDF5
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
HDF5 2.2.0 版本之前 src/H5Zscaleoffset.c 文件中的 H5Z__filter_scaleoffset() 函数存在基于堆的缓冲区过度读取漏洞。攻击者可通过构造的 HDF5 文件利用此漏洞，导致拒绝服务（应用程序崩溃）。当存储的最小位数等于数据类型的完整精度时，解码器会复制 d_nelmts * size 字节的数据，但未检查压缩块的大小是否足以容纳这些数据。这两个值均源自数据集过滤器管线消息中由攻击者控制的 scale-offset 过滤器参数。
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I. Basic Information for CVE-2026-19029
Vulnerability Information
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Vulnerability Title
HDF5 scale-offset filter heap buffer over-read via crafted chunk
Source: CVE Program / CVE List V5
Vulnerability Description
A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk holds that many bytes. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| The HDF Group | HDF5 | < 2.2.0 | - |
|
II. Public POCs for CVE-2026-19029
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-19029 (1)
IV. Related Vulnerabilities
Same product: HDF5
-
CVE-2026-106547
HDF5 heap buffer overflow in H5VM_array_fill via crafted fil -
CVE-2026-92627
Heap Use-After-Free in H5T__conv_f_f -
CVE-2026-19028
HDF5 integer underflow in Fletcher32 filter leads to massive -
CVE-2026-19027
HDF5 out-of-bounds heap read in N-Bit filter decompression -
CVE-2026-19026
Nbit filter NULL/short parameter-array dereference
Same vendor: The HDF Group
-
CVE-2026-106547
HDF5 heap buffer overflow in H5VM_array_fill via crafted fil -
CVE-2026-92627
Heap Use-After-Free in H5T__conv_f_f -
CVE-2026-19028
HDF5 integer underflow in Fletcher32 filter leads to massive -
CVE-2026-19027
HDF5 out-of-bounds heap read in N-Bit filter decompression -
CVE-2026-19026
Nbit filter NULL/short parameter-array dereference
V. Comments for CVE-2026-19029
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