Bug 2469057 (CVE-2026-43620)

Summary: CVE-2026-43620 rsync: rsync: Remote Denial of Service via Out-of-bounds Read
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, security-response-team, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in rsync. A malicious rsync server can exploit an out-of-bounds read vulnerability in the `recv_files()` function. By manipulating compatibility flags and transfer records, the server can cause a connecting client to attempt to read memory outside of allocated bounds. This can lead to a segmentation fault, resulting in a denial of service for the client.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Deadline: 2026-05-20   

Description OSIDB Bzimport 2026-05-11 14:39:56 UTC 
A flaw was found in rsync. A malicious rsync server can exploit an out-of-bounds read vulnerability in the `recv_files()` function. By manipulating compatibility flags and transfer records, the server can cause a connecting client to attempt to read memory outside of allocated bounds. This can lead to a segmentation fault, resulting in a denial of service for the client.