Red Hat Security Advisory: 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 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 RHEL10 (JIRA:RHEL-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.
AI Analysis
Technical Summary
The rsync utility in Red Hat Enterprise Linux 10 contains two security vulnerabilities. CVE-2026-43618 is a remote memory disclosure vulnerability due to an integer overflow in compressed-token decoding. CVE-2026-29518 is a TOCTOU symlink race condition that permits local privilege escalation in daemon mode without chroot. These vulnerabilities have been fixed by rebasing rsync to version 3.4.4 in RHEL 10. The update is available as part of Red Hat's security advisory RHSA-2026:26332.
Potential Impact
Successful exploitation of CVE-2026-43618 could lead to remote memory disclosure, potentially exposing sensitive information. CVE-2026-29518 allows a local attacker to escalate privileges on the system when rsync is running in daemon mode without chroot, increasing the risk of unauthorized system control. Both vulnerabilities pose significant security risks if left unpatched.
Mitigation Recommendations
Red Hat has provided an official fix by updating rsync to version 3.4.4 in Red Hat Enterprise Linux 10. Users should apply the update as described in Red Hat advisory RHSA-2026:26332 and the referenced article https://access.redhat.com/articles/11258 to remediate these vulnerabilities. No additional mitigations are specified beyond applying this update.
Red Hat Security Advisory: rsync security, bug fix, and enhancement update
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: 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 RHEL10 (JIRA:RHEL-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.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The rsync utility in Red Hat Enterprise Linux 10 contains two security vulnerabilities. CVE-2026-43618 is a remote memory disclosure vulnerability due to an integer overflow in compressed-token decoding. CVE-2026-29518 is a TOCTOU symlink race condition that permits local privilege escalation in daemon mode without chroot. These vulnerabilities have been fixed by rebasing rsync to version 3.4.4 in RHEL 10. The update is available as part of Red Hat's security advisory RHSA-2026:26332.
Potential Impact
Successful exploitation of CVE-2026-43618 could lead to remote memory disclosure, potentially exposing sensitive information. CVE-2026-29518 allows a local attacker to escalate privileges on the system when rsync is running in daemon mode without chroot, increasing the risk of unauthorized system control. Both vulnerabilities pose significant security risks if left unpatched.
Mitigation Recommendations
Red Hat has provided an official fix by updating rsync to version 3.4.4 in Red Hat Enterprise Linux 10. Users should apply the update as described in Red Hat advisory RHSA-2026:26332 and the referenced article https://access.redhat.com/articles/11258 to remediate these vulnerabilities. No additional mitigations are specified beyond applying this update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:26332
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-43618"]
- Cvss Version
- null
Threat ID: 6a3270570b89be68881d3b31
Added to database: 6/17/2026, 10:00:55 AM
Last enriched: 6/17/2026, 10:03:27 AM
Last updated: 6/17/2026, 5:25:57 PM
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.