RUSTSEC-2026-0396
`Seekable` reads a NULL or out-of-bounds seek table
- Severity
- Not rated yet
- No source has published a CVSS score yet
- Exploit chance (EPSS)
- —
- No score published
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- —
- Not classified
- Fix
8.2.0- Upgrade zstd-safe to this version or later
Description
Seekable did not record whether it was initialized. On a fresh Seekable,
or one whose init_buff() failed, decompress, offset_to_frame_index and
frame_decompressed_size made the C library read a NULL seek table. After a
failed re-initialization, decompress returned data from the refused buffer
using the previous seek table.
Separately, frame_decompressed_size(num_frames()), on Seekable and
SeekTable, read one entry past the end of the seek table.
The flaw was corrected by refusing to use a Seekable until an
initialization succeeded, and by checking the frame index.
Affected versions
crates.io
| Package | Vulnerable | Fixed in |
|---|---|---|
| zstd-safe | >= 7.2.2, < 8.2.0 |
8.2.0 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
zstd-safe crates.io → 8.2.0
- cargo
cargo update -p zstd-safe --precise 8.2.0
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| RUSTSEC-2026-0406 Use-after-free when changing a multithreaded context with an unfinished frame | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0405 Out-of-bounds read with an out-of-range `InBuffer::pos` | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0404 Double free in `DCtx::try_clone` | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0403 Uninitialized memory exposed when streaming decompression of a legacy frame fails | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0402 Heap buffer overflow in `CCtx::try_clone` on a multithreaded context | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0401 Out-of-bounds read in `train_from_buffer` when sample sizes overflow | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0400 Use-after-free of a dictionary after a one-shot call on a context with an open stream | Not rated yet | Also affects zstd-safe |
| RUSTSEC-2026-0399 Use-after-free through `init_using_cdict` and `init_using_ddict` | Not rated yet | Also affects zstd-safe |
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