{"id":"RUSTSEC-2026-0291","revision":null,"records":[{"revision":"aeec8e56c7b14b2bb31fc1e6f63c54af","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2026-0291","aliases":[],"title":"Double free in `OwnedAlloc::drop_in_place` when the contained value's `Drop` panics","description":"`OwnedAlloc::drop_in_place` destroys the contained value by hand, then commits\nthe ownership transfer with `mem::forget(self)` — which lives inside `into_raw`\nand so runs only after the destruction. `T::drop` is user code and may panic. If\nit does, the forget is skipped and the still-live `OwnedAlloc` unwinds, whose\ndestructor drops the same `T` a second time and then deallocates. For a `T` that\nowns an allocation, the same block is freed twice — a double free (CWE-415).\nThat destructor also reads the already-destroyed value through\n`Layout::for_value` before deallocating, a use-after-free (CWE-416).\n\n`MaybeUninitAlloc::drop_in_place` delegates to the same function, so both public\nentry points are affected. Storing a value whose `Drop` can panic and calling\neither is enough — no `unsafe` on the caller's side.\n\n## Fix\n\nNo fixed release is available. The crate has had no release since 2018 and the\nmaintainer has not responded to the report, nor to the one on `lockfree`, which\nis published from the same account. `forget_inner` leaks the value instead of\ndestroying it, which is safe.","state":0,"publishedAt":"2026-09-09T12:00:00+00:00","modifiedAt":"2026-09-21T09:15:02.8931653+00:00","affected":[{"ecosystem":"crates.io","name":"owned-alloc","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.0-0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://crates.io/crates/owned-alloc","https://rustsec.org/advisories/RUSTSEC-2026-0291.html","https://gitlab.com/bzim/owned-alloc/-/issues/1"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0291","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2026-0291","identifiers":["RUSTSEC-2026-0291"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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