Red Hat Security Advisory: rsync security 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) 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 8 contains two security vulnerabilities. CVE-2026-43618 is a remote memory disclosure vulnerability resulting from an integer overflow during compressed-token decoding. CVE-2026-29518 is a TOCTOU symlink race condition that permits local privilege escalation in daemon mode without chroot. Red Hat Product Security has issued an important security advisory (RHSA-2026:26408) providing updated rsync packages that fix these vulnerabilities. The advisory covers multiple architectures including x86_64, s390x, ppc64le, and aarch64, as well as extended life cycle releases. Detailed patch information and package versions are available via the Red Hat advisory and article references.
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 via a symlink race condition in rsync daemon mode without chroot, increasing the risk of unauthorized system access. Both vulnerabilities pose significant security risks if unpatched.
Mitigation Recommendations
Red Hat has released updated rsync packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 8 and its extended life cycle versions should apply the security update described in advisory RHSA-2026:26408 promptly. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory beyond applying the official update.
Red Hat Security Advisory: rsync security 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) 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 8 contains two security vulnerabilities. CVE-2026-43618 is a remote memory disclosure vulnerability resulting from an integer overflow during compressed-token decoding. CVE-2026-29518 is a TOCTOU symlink race condition that permits local privilege escalation in daemon mode without chroot. Red Hat Product Security has issued an important security advisory (RHSA-2026:26408) providing updated rsync packages that fix these vulnerabilities. The advisory covers multiple architectures including x86_64, s390x, ppc64le, and aarch64, as well as extended life cycle releases. Detailed patch information and package versions are available via the Red Hat advisory and article references.
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 via a symlink race condition in rsync daemon mode without chroot, increasing the risk of unauthorized system access. Both vulnerabilities pose significant security risks if unpatched.
Mitigation Recommendations
Red Hat has released updated rsync packages that address these vulnerabilities. Users of Red Hat Enterprise Linux 8 and its extended life cycle versions should apply the security update described in advisory RHSA-2026:26408 promptly. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory beyond applying the official 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-2026:26408
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-43618"]
- Cvss Version
- null
Threat ID: 6a3270570b89be68881d3b11
Added to database: 6/17/2026, 10:00:55 AM
Last enriched: 6/17/2026, 10:03:15 AM
Last updated: 6/17/2026, 5:23:59 PM
Views: 5
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