RUSTSEC-2026-0291

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Source

https://rustsec.org/advisories/RUSTSEC-2026-0291

Import Source

https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2026-0291.json

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2026-0291

Published

2026-09-09T12:00:00Z

Modified

2026-09-21T09:15:02Z

Summary

Double free in `OwnedAlloc::drop_in_place` when the contained value's `Drop` panics

Details

OwnedAlloc::drop_in_place destroys the contained value by hand, then commits the ownership transfer with mem::forget(self) — which lives inside into_raw and so runs only after the destruction. T::drop is user code and may panic. If it does, the forget is skipped and the still-live OwnedAlloc unwinds, whose destructor drops the same T a second time and then deallocates. For a T that owns an allocation, the same block is freed twice — a double free (CWE-415). That destructor also reads the already-destroyed value through Layout::for_value before deallocating, a use-after-free (CWE-416).

MaybeUninitAlloc::drop_in_place delegates to the same function, so both public entry points are affected. Storing a value whose Drop can panic and calling either is enough — no unsafe on the caller's side.

Fix

No fixed release is available. The crate has had no release since 2018 and the maintainer has not responded to the report, nor to the one on lockfree, which is published from the same account. forget_inner leaks the value instead of destroying it, which is safe.

Database specific

{
    "license":  "CC0-1.0"
}

References

Affected packages

crates.io / owned-alloc

Package

Name: owned-alloc; View open source insights on deps.dev
Purl: pkg:cargo/owned-alloc

Affected ranges

Type: SEMVER
Events: Introduced

0.0.0-0

Ecosystem specific

{
    "affected_functions":  null,
    "affects":  {
        "arch":  [],
        "functions":  [
            "owned_alloc::MaybeUninitAlloc::drop_in_place",
            "owned_alloc::OwnedAlloc::drop_in_place"
        ],
        "os":  []
    }
}