RHSA-2026:67463 - Security Advisory

Topic

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 the CVE link(s) in the References section.

Description

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 Fix(es):

• rsync: rsync 2.3.3 < 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink (CVE-2026-70460)
• rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions (CVE-2026-70454)
• rsync: rsync: Arbitrary file deletion via malicious file list (CVE-2026-53789)
• rsync: rsync < 3.5.0 Command Injection via Multiple Code Paths (CVE-2026-53790)
• rsync: rsync: Memory corruption via crafted file entries (CVE-2026-70458)
• rsync: rsync: Denial of Service via handshake stall (CVE-2026-70464)
• rsync: rsync: Local Privilege Escalation via Symlink Following (CVE-2026-53803)
• rsync: rsync: Unauthorized File Access via Symlink Module Root (CVE-2026-53784)
• rsync: rsync: Authorization bypass via `auth users` directive parsing (CVE-2026-70463)
• rsync: rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure (CVE-2026-70452)
• rsync: rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header (CVE-2026-53791)
• rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options (CVE-2026-53795)
• rsync: rsync: Heap Out-of-Bounds Write via crafted argument list (CVE-2026-70456)
• rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode (CVE-2026-53793)
• rsync: rsync: Denial of Service via Algorithmic Complexity (CVE-2026-70453)
• rsync: rsync: Denial of Service via Zstandard compression thread exhaustion (CVE-2026-70455)
• rsync: rsync: Memory corruption via out-of-bounds write in size parsing (CVE-2026-70457)
• rsync: rsync: Information disclosure and denial of service via crafted files-from entry (CVE-2026-70461)
• rsync: rsync: Arbitrary File Read via Symlink Following (CVE-2026-53802)
• rsync: rsync: Arbitrary file write via path traversal in --relative mode (CVE-2026-53785)
• rsync: rsync: Directory escape via TOCTOU race condition in rrsync (CVE-2026-53783)

Bug Fix(es) and Enhancement(s):

• Rebase rsync to version 3.5.0 in RHEL10 (JIRA:RHEL-246094)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 10 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64
• Red Hat Enterprise Linux for IBM z Systems 10 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 s390x
• Red Hat Enterprise Linux for Power, little endian 10 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le
• Red Hat Enterprise Linux for ARM 64 10 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 aarch64
• Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 aarch64
• Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 s390x
• Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le
• Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2 aarch64
• Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le
• Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2 s390x

Fixes

• BZ - 2515368 - CVE-2026-70460 rsync: rsync 2.3.3 < 3.5.0 Path Traversal via --partial-dir/--backup-dir Symlink
• BZ - 2515373 - CVE-2026-70454 rsync: rsync: TLS Certificate Validation Bypass allows interception of encrypted sessions
• BZ - 2515378 - CVE-2026-53790 rsync: rsync < 3.5.0 Command Injection via Multiple Code Paths
• BZ - 2515379 - CVE-2026-70458 rsync: rsync: Memory corruption via crafted file entries
• BZ - 2515380 - CVE-2026-70464 rsync: rsync: Denial of Service via handshake stall
• BZ - 2515381 - CVE-2026-53803 rsync: rsync: Local Privilege Escalation via Symlink Following
• BZ - 2515384 - CVE-2026-53784 rsync: rsync: Unauthorized File Access via Symlink Module Root
• BZ - 2515385 - CVE-2026-70463 rsync: rsync: Authorization bypass via `auth users` directive parsing
• BZ - 2515386 - CVE-2026-70452 rsync: rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure
• BZ - 2515387 - CVE-2026-53791 rsync: rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header
• BZ - 2515389 - CVE-2026-53795 rsync: rsync: Arbitrary file write via --temp-dir or --link-dest options
• BZ - 2515395 - CVE-2026-70456 rsync: rsync: Heap Out-of-Bounds Write via crafted argument list
• BZ - 2515396 - CVE-2026-53793 rsync: rsync < 3.5.0 Path Confinement Bypass via /./ Boundary Marker in Chroot Mode
• BZ - 2515403 - CVE-2026-70453 rsync: rsync: Denial of Service via Algorithmic Complexity
• BZ - 2515406 - CVE-2026-70455 rsync: rsync: Denial of Service via Zstandard compression thread exhaustion
• BZ - 2515409 - CVE-2026-70461 rsync: rsync: Information disclosure and denial of service via crafted files-from entry
• BZ - 2515417 - CVE-2026-53785 rsync: rsync: Arbitrary file write via path traversal in --relative mode
• BZ - 2515419 - CVE-2026-53783 rsync: rsync: Directory escape via TOCTOU race condition in rrsync

CVEs

• CVE-2026-53783
• CVE-2026-53784
• CVE-2026-53785
• CVE-2026-53789
• CVE-2026-53790
• CVE-2026-53791
• CVE-2026-53793
• CVE-2026-53795
• CVE-2026-53802
• CVE-2026-53803
• CVE-2026-70452
• CVE-2026-70453
• CVE-2026-70454
• CVE-2026-70455
• CVE-2026-70456
• CVE-2026-70457
• CVE-2026-70458
• CVE-2026-70460
• CVE-2026-70461
• CVE-2026-70463
• CVE-2026-70464

References

• https://access.redhat.com/security/updates/classification/#important