Bug 2386149 (CVE-2025-54351)

Summary: CVE-2025-54351 iperf3: iperf Buffer Overflow
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: adudiak, kshier, omaciel, stcannon, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in iperf3. The `recv` function in `net.c` exhibits a buffer overflow when the `--skip-rx-copy` option is used with `MSG_TRUNC`, allowing a network attacker to trigger the overflow. This vulnerability allows an attacker to send a specially crafted message. The resulting buffer overflow may lead to an application-level denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2386256, 2386255    
Bug Blocks:    

Description OSIDB Bzimport 2025-08-03 02:01:06 UTC
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).