rsync <3.5.0 Null Pointer Deref in child daemon via dot entry
CVE-2026-70459 Published on August 13, 2026
rsync 3.0.0 < 3.5.0 Daemon Crash via Malformed File List Entry
rsync 3.0.0 before 3.5.0 contains a null pointer dereference vulnerability in the daemon child process that allows remote attackers to crash the daemon by sending a file list whose first entry is a dot entry not typed as a directory. The daemon dereferences the first file list entry as a directory structure pointer without verifying the entry type, resulting in an invalid or uninitialized pointer dereference that terminates the client connection.
Vulnerability Analysis
CVE-2026-70459 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Use of Uninitialized Resource
The software uses or accesses a resource that has not been initialized. When a resource has not been properly initialized, the software may behave unexpectedly. This may lead to a crash or invalid memory access, but the consequences vary depending on the type of resource and how it is used within the software.
Products Associated with CVE-2026-70459
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Affected Versions
RsyncProject rsync:- Version 3.0.0, <= 3.4.4 is affected.
- Version 3.5.0 is unaffected.