SB2026081818 - SUSE update for rsync

Description

This security bulletin contains information about 2 vulnerabilities.

1) 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: 8.4 [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]

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.

2) Link following (CVE-ID: CVE-2026-43619)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a local user to overwrite files and manipulate filesystem objects outside the module.

The vulnerability exists due to symlink race conditions in path-based system calls in daemon mode when handling path-based system calls without chroot. A local user can replace path components with symlinks during filesystem operations to overwrite files and manipulate filesystem objects outside the module.

Only daemon configurations with use chroot = no for a module are vulnerable.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2026/suse-su-20263629-1/