smallvec creates uninitialized value of any type
Priority LOW 38CWE-457Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
Affected versions of this crate called `mem::uninitialized()` to create values of a user-supplied type `T`. This is unsound e.g. if `T` is a reference type (which must be non-null and thus may not remain uninitialized). The flaw was corrected by avoiding the use of `mem::uninitialized()`, using `MaybeUninit` instead.
Why it matters now
Fix Fixed smallvec (crates.io): 0.6.13
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | smallvec (crates.io) | before 0.6.13 | 0.6.13 | Patch available | GHSA-66p5-j55p-32r9 |
- smallvec (crates.io) Vendor— Affected before 0.6.13 Fixed in 0.6.13 Patch available GHSA-66p5-j55p-32r9
Remediation
- Fix · GHSA-66p5-j55p-32r9 smallvec (crates.io) Fixed in 0.6.13 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-66p5-j55p-32r9
References
Sources
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