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HDF5: Overflow error reading certain file types can crash software
published 5 years ago
Summary
The HDF5 library has a bug that can cause a crash when reading certain types of files. This could potentially happen if you're using HDF5 to read files in your application. To avoid crashes, update to the latest version of HDF5.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| OSS-Fuzz | – | matio | All versions |
Original advisory text
Heap-buffer-overflow in H5HG_read
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30743
```
Crash type: Heap-buffer-overflow READ 8
Crash state:
H5HG_read
H5VL__native_blob_get
H5VL__blob_get
```
```
Crash type: Heap-buffer-overflow READ 8
Crash state:
H5HG_read
H5VL__native_blob_get
H5VL__blob_get
```
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=30743 Third Party Advisory
Timeline
Published11 Feb 2021
Updated11 Mar 2026
First seen6 Mar 2026
Sources
OSV-2021-363 · OSV
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