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EUVD-2026-162450

fkie_cve-2024-45191

An issue was discovered in Matrix libolm through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. This refers to the libolm implementation of Olm. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

GHSA-gc66-2jq6-66c6

An issue was discovered in Matrix libolm (aka Olm) through 3.2.16. The AES implementation is vulnerable to cache-timing attacks due to use of S-boxes. This is related to software that uses a lookup table for the SubWord step. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

RUSTSEC-2024-0368 — olm-sys: wrapped library unmaintained, potentially vulnerable

Affected: crates.io: olm-sys

After several cryptographic vulnerabilities in `libolm` were disclosed publicly, the Matrix Foundation has [officially deprecated the library](https://matrix.org/blog/2024/08/libolm-deprecation/). `olm-sys` is a thin wrapper around `libolm` and is now deprecated and potentially vulnerable in kind.

Users of `olm-sys` and its higher-level abstraction, `olm-rs`, are highly encouraged to switch to [`vodozemac`](https://crates.io/crates/vodozemac) as soon as possible. It is the successor effort to `libolm` and is written in Rust.

UBUNTU-CVE-2024-45191

Affected: Ubuntu:18.04:LTS: olm, Ubuntu:Pro:20.04:LTS: olm, Ubuntu:22.04:LTS: olm, Ubuntu:24.04:LTS: olm, Ubuntu:25.10: olm, Ubuntu:26.04:LTS: olm