rsync: rsync: Information disclosure and denial of service via crafted files-from entry

A flaw was found in rsync. Remote unauthenticated attackers can exploit a heap out-of-bounds write vulnerability by supplying a crafted files-from entry. This entry, containing both an interior and trailing backslash, causes the addimpliedinclude function to under-count the trailing backslash whe...

rsync: rsync: Denial of Service via handshake stall

A denial of service flaw was found in the rsync daemon. An unauthenticated remote attacker can stall the handshake process by opening multiple concurrent connections and trickling data or stalling prior to module selection. This bypasses standard timeouts and exhausts all available connection...

rsync: rsync: Arbitrary File Read via Symlink Following

A flaw was found in rsync. A local attacker with low privileges can exploit a symlink following vulnerability in the handling of input configuration files, such as those specified by --files-from or --password-file. This allows the attacker to read arbitrary files accessible to the rsync daemon...

rsync: rsync: Local Privilege Escalation via Symlink Following

A symlink-following vulnerability in rsync allows local attackers to redirect predictable output paths to arbitrary filesystem locations. When rsync runs with elevated privileges such as setuid or a privileged daemon, this enables arbitrary file overwrites and local privilege escalation...

Important: Red Hat Security Advisory: rsync security, bug fix, and enhancement update

An update for rsync is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from th...

rsync: rsync: Denial of Service via Algorithmic Complexity

A flaw was found in rsync. A remote attacker can exploit an algorithmic complexity vulnerability within the hashsearch function by sending a specially crafted file list. This can lead to the exhaustion of the receiver's CPU resources, causing a sustained denial of service DoS...

rsync: rsync: Denial of Service via Zstandard compression thread exhaustion

A denial-of-service flaw in rsync allows remote attackers to exhaust system memory and CPU. By sending requests using the --zt Zstandard compression alias, an attacker can bypass security directives and spawn an excessive number of worker threads...

rsync: rsync: Directory escape via TOCTOU race condition in rrsync

A time-of-check to time-of-use TOCTOU race condition flaw in the rrsync restricted shell wrapper allows authenticated remote attackers to escape directory restrictions. By replacing a validated path component with a symbolic link prior to file transfer execution, an attacker can bypass intended...

rsync: rsync: Unauthorized File Access via Symlink Module Root

A flaw was found in rsync. This path traversal vulnerability allows remote clients to access files outside the intended module root. This occurs when the use chroot option is disabled and the module root path, or a component of it, is a symbolic link. The rsync daemon fails to resolve symlinks...

rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions

A flaw was found in the rsync-ssl wrapper script's TLS certificate validation. An on-path attacker can present self-signed or invalid certificates to intercept, decrypt, or tamper with encrypted sessions. Because rsync fails to validate the certificate against a trusted CA or verify hostname...

Astra Linux – Vulnerability in rsync

A malicious client acting as the recipient of an rsync file transfer can trigger an out-of-bounds read of a heap-based buffer, through a negative array index. The malicious rsync client requires at least read access to the remote rsync module in order to trigger this issue...

Astra Linux – Vulnerability in rsync

There is a path traversal vulnerability in rsync. This vulnerability stems from a behavior enabled by the --inc-recursive option, which is a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the --inc-recursive...

Astra Linux – Vulnerability in rsync

In rsync versions 3.0.1 through 3.4.1, the receivexattr function relies on an untrusted length value during a qsort call, resulting in a use-after-free vulnerability. The vulnerability is exploitable when rsync is executed with the -X option also known as --xattrs. On Linux, many but not all comm...

Astra Linux – Vulnerability in rsync

A flaw was discovered in rsync. It allows a server to enumerate the contents of an arbitrary file from the client’s machine. This issue occurs when files are being copied from the client to the server. During this process, the rsync server sends checksums of local data to the client for compariso...

Astra Linux – Vulnerability in rsync

A flaw was discovered in rsync. This vulnerability stems from a race condition that occurs during rsync’s handling of symbolic links. The default behavior of rsync when encountering symbolic links is to skip them. If an attacker replaces a regular file with a symbolic link at the appropriate time...

Astra Linux – Vulnerability in rsync

A flaw was discovered in rsync. When the --safe-links option is used, the rsync client fails to properly verify whether a symbolic link destination sent from the server contains another symbolic link within it. This leads to a path traversal vulnerability, which may result in arbitrary file writi...

Astra Linux – Vulnerability in rsync

A flaw was discovered in rsync that can be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length s2length, causing a comparison between a checksum and uninitialized memory, and resulting in the leakage of one byte of uninitialized stack data ...

ALSA-2026:67463 Important: rsync security, bug fix, and enhancement update

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fixes:...

ALSA-2026:67462 Important: rsync security, bug fix, and enhancement update

The rsync utility enables the users to copy and synchronize files locally or across a network. Synchronization with rsync is fast because rsync only sends the differences in files over the network instead of sending whole files. The rsync utility is also used as a mirroring tool. Security Fixes:...

rsync: Fix of 5 CVEs

CVE-2026-53784: confine the daemon's absolute chdir target with a new ownership-walk resolver so a planted parent symlink cannot steer a "use chroot = no" module root outside the module - CVE-2026-53786: strip a real moduledir prefix before the daemon-filter check on a merge-file path -- leaving...