| Name | CVE-2025-54764 |
| Description | Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| mbedtls (PTS) | bullseye | 2.16.9-0.1 | vulnerable |
| bullseye (security) | 2.16.9-0.1+deb11u3 | vulnerable |
| bookworm | 2.28.3-1 | vulnerable |
| forky, sid, trixie | 3.6.4-2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| mbedtls | source | (unstable) | (unfixed) | | | |
Notes
https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-10-ssbleed-mstep/