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OpenAdvisories
High ALSA-2026:26332 2 CVEs

Important: rsync security, bug fix, and enhancement update

Published Jun 16, 2026 · Updated Oct 29, 2026

Summary

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: Remote memory disclosure via integer overflow in compressed-token decoding (CVE-2026-43618)
* rsync: TOCTOU symlink race condition allowing local privilege escalation in daemon mode without chroot. (CVE-2026-29518)

Bug Fix(es) and Enhancement(s):

* Rebase rsync to version 3.4.4 in AlmaLinux10 (JIRA:AlmaLinux-181630)

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.

Fixed packages 3

ReleasePackageFixed in
AlmaLinux · 10 rsync 3.4.4-1.el10_2
AlmaLinux · 10 rsync-daemon 3.4.4-1.el10_2
AlmaLinux · 10 rsync-rrsync 3.4.4-1.el10_2

Vulnerabilities 2

  • High 8.1

    Rsync < 3.4.3 Integer Overflow Information Disclosure

    Rsync version 3.4.2 and prior contain an integer overflow vulnerability in the compressed-token decoder where a 32-bit signed counter is not checked for overflow, allowing a malicious sender to trigger an overflow that causes the receiver process to read and …

  • High 7.0

    Rsync < 3.4.3 TOCTOU Race Condition Allows Symlink-Based Arbitrary File Write

    Rsync versions before 3.4.3 contain a time-of-check to time-of-use (TOCTOU) race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attacke…

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-29518
  • report
    https://access.redhat.com/security/cve/CVE-2026-43618
  • report
    https://bugzilla.redhat.com/2469054
  • report
    https://bugzilla.redhat.com/2469055
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-26332.html