SB2026061690 - Red Hat Enterprise Linux 9 update for rsync
Published: June 16, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2026-43618)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to an integer overflow in the compressed-token decoder when processing compressed token data from an authenticated daemon connection. A remote user can send crafted compressed-token data to disclose sensitive information.
The disclosed memory may include environment variables, passwords, heap data, and library pointers.
2) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2026-29518)
CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information and overwrite files outside the module.
The vulnerability exists due to a time-of-check time-of-use symlink race condition in daemon mode path handling when processing file operations on parent path components without chroot. A local user can replace a parent directory component with a symlink between the check and open operation to disclose sensitive information and overwrite files outside the module.
Only daemon configurations with use chroot = no for a module are vulnerable.
Remediation
Install update from vendor's website.