PT-2025-48496 · Julia · Mbedtls Jll

Published 2025-11-21 · Updated 2025-11-21

OSV

Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)

Related Identifiers

JLSEC-2025-198

Affected Products

Mbedtls Jll

References · 8

• https://osv.dev/vulnerability/JLSEC-2025-198 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSFFOROD6IVLADZHNJC2LPDV7FQRP7XB · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEHHH2DOBXB25CAU3Q6E66X723VAYTB5 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGSKQSGR5SOBRBXDSSPTCDSBB5K3GMPF · Vendor Advisory
• https://github.com/ARMmbed/mbedtls/commit/33f66ba6fd234114aa37f0209dac031bb2870a9b · Note
• https://github.com/ARMmbed/mbedtls/commit/298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd · Note
• https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-10 · Note
• https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html · Note