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: Out of bounds array access via negative index (CVE-2025-10158) 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 9 contains a vulnerability identified as CVE-2025-10158, involving an out-of-bounds array access caused by a negative index. This vulnerability is classified under CWE-129 (Improper Validation of Array Index). The issue affects various builds of rsync across multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has issued a security advisory (RHSA-2026:6390) providing updated packages that fix this flaw. The vulnerability could lead to memory corruption, but no known exploits are reported in the wild. The advisory rates the impact as moderate.
Potential Impact
The vulnerability allows out-of-bounds array access via a negative index in the rsync utility, which could cause memory corruption or crashes. This may impact the reliability and security of systems using rsync for file synchronization or mirroring. No known active exploitation has been reported, and the severity is rated moderate by Red Hat.
Mitigation Recommendations
Red Hat has released official updates for rsync in Red Hat Enterprise Linux 9 to fix this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2026:6390. Details and instructions for applying the update are available at https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerability. No additional mitigation steps are indicated by the vendor.
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: Out of bounds array access via negative index (CVE-2025-10158) 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
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The rsync utility in Red Hat Enterprise Linux 9 contains a vulnerability identified as CVE-2025-10158, involving an out-of-bounds array access caused by a negative index. This vulnerability is classified under CWE-129 (Improper Validation of Array Index). The issue affects various builds of rsync across multiple architectures including x86_64, s390x, ppc64le, and aarch64. Red Hat has issued a security advisory (RHSA-2026:6390) providing updated packages that fix this flaw. The vulnerability could lead to memory corruption, but no known exploits are reported in the wild. The advisory rates the impact as moderate.
Potential Impact
The vulnerability allows out-of-bounds array access via a negative index in the rsync utility, which could cause memory corruption or crashes. This may impact the reliability and security of systems using rsync for file synchronization or mirroring. No known active exploitation has been reported, and the severity is rated moderate by Red Hat.
Mitigation Recommendations
Red Hat has released official updates for rsync in Red Hat Enterprise Linux 9 to fix this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2026:6390. Details and instructions for applying the update are available at https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerability. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:6390
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a160977e29bf47b50643242
Added to database: 05/26/2026, 20:58:31 UTC
Last enriched: 07/12/2026, 10:45:21 UTC
Last updated: 07/31/2026, 19:22:52 UTC
Views: 61
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