GHSA-v27v-f96q-qhjq json
Degraded secret zeroization capabilities
published 2026-11-06 2 d ago modified 2026-11-06 2 d ago also RUSTSEC-2026-0451
- 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 version 0.11.1 and earlier of vodozemac, the Olm root key ratchet did not zeroize its HKDF output after use. Each ratchet step left a copy of the new root key and chain key in freed heap memory.
## Impact
An attacker who can read the process's memory, for example through a separate memory-disclosure bug, a core dump, or swapped-out pages, may recover root keys and chain keys from earlier ratchet steps. A leaked chain key allows decrypting the messages in that chain, weakening Olm's forward secrecy for affected sessions.
Patch / fix
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | vodozemac | >=0.0.0-0, <0.11.2 |
0.11.2 |
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.