RUSTSEC-2026-0309 json
`SinglyLinkedList::remove` dereferences a null link
published 2026-09-20 49 d ago modified 2026-09-25 44 d ago
- cvss
- —
- not scored
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no score, EPSS covers CVEs only
- public exploits
- 0
- none known
Summary
In versions before 0.2.1, `SinglyLinkedList::remove` is safe and walks the intrusive list with an unchecked dereference. On an empty list, or when `node` is not in the list, `(*current_elm).next` reads a null pointer. That is undefined behavior. The list head is a raw `*mut Node<T>`, and safe code can construct the empty list.
The maintainer fixed this in 0.2.1 by rejecting those two cases with an unconditional `assert!` before the pointer is followed, matching the upstream Zig `unwrap` on the same paths. 0.2.0 was yanked. Versions 0.1.0 through 0.1.13 are still published and still contain the unchecked walk.
Patch / fix
- crates.io bun_collections 0.2.1
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | bun_collections | >=0.0.0-0, <0.2.1 |
0.2.1 |
References
Sources
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.