CVE-2025-66622matrix-sdk-base is vulnerable to DoS via custom m.room.join_rules event values

Descripción

matrix-sdk-base is the base component to build a Matrix client library. Versions 0.14.1 and prior are unable to handle responses that include custom m.room.join_rules values due to a serialization bug. This can be exploited to cause a denial-of-service condition, if a user is invited to a room with non-standard join rules, the crate's sync process will stall, preventing further processing for all rooms. This is fixed in version 0.16.0.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/matrix-org/matrix-rust-sdk/security/advisories/GHSA-jj6p-3m75-g2p3 PatchVendor Advisory
• https://github.com/matrix-org/matrix-rust-sdk/pull/5924 Issue TrackingPatch
• https://github.com/matrix-org/matrix-rust-sdk/commit/4ea0418abefab2aa93f8851a4d39c723e703e6b0 Patch
• https://rustsec.org/advisories/RUSTSEC-2025-0135.html Third Party Advisory