Bug 2383773 (CVE-2024-58262)

Summary: CVE-2024-58262 curve25519-dalek: Curve25519-Dalek Scalar Timing Vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: dbosanac, fedora, jcantril, jreimann, lball, mdessi, mfindra, mrizzi, ngough, pcattana, periklis, rojacob, veshanka
Target Milestone: ---Keywords: Security
Target Release: ---Flags: fedora: needinfo? (mfindra)
Hardware: All   
OS: Linux   
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A flaw was found in curve25519-dalek. The crate’s implementation of constant-time operations on elliptic curve scalars lacks proper LLVM optimization, potentially revealing information about the scalar's bits. A local attacker can observe timing differences during scalar operations. This information leak occurs via direct execution of the vulnerable code. The consequence is a potential side-channel attack.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2383846, 2383847, 2383848    
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Description OSIDB Bzimport 2025-07-27 20:01:08 UTC
The curve25519-dalek crate before 4.1.3 for Rust has a constant-time operation on elliptic curve scalars that is removed by LLVM.

Comment 4 Cristian Le 2025-12-02 09:16:16 UTC
When this bug was created, `rust-curve25519-dalek` was already 4.1.3 on all supported distros. The only tickets raised were for `atuin` package, for which I confirmed that it used 4.1.3 since the start of the import. Probably the tooling failed on this one.