Bug 2405231 (CVE-2025-54764)

Summary: CVE-2025-54764 mbedtls: Mbedtls timing attacks in RSA operations
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Mbed TLS’s modular inversion routine and GCD routine are vulnerable to local timing attacks in multiple ways. Please see the linked mbed-tls advisory for technical details. When one of the vulnerable RSA functions is used, the vulnerability allows the attacker to fully recover the RSA private key. The side channels in GCD and modular inversion can be exploited by a local attacker.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2405237, 2405238, 2405243, 2405245, 2405246, 2405236, 2405239, 2405240, 2405241, 2405242, 2405244    
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Description OSIDB Bzimport 2025-10-20 22:01:45 UTC
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.