{"id":"USN-8349-3","aliases":[],"status":"published","title":"rsync regression","description":"USN-8349-1 fixed vulnerabilities in rsync. Unfortunately that update introduced multiple\nregressions in rsync functionality. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Calum Hutton discovered that rsync contained a heap-based out-of-bounds\n read when handling file transfers. A remote attacker with read access\n to an rsync server could possibly use this issue to cause a denial of\n service. (CVE-2025-10158)\n\n Batuhan Sancak, Damien Neil, and Michael Stapelberg discovered that\n rsync daemons configured without chroot protection were exposed to a\n race condition on parent path components. A local attacker with write\n access to a module could possibly use this issue to overwrite files,\n obtain sensitive information, or escalate privileges.\n (CVE-2026-29518)\n\n It was discovered that rsync did not properly validate a length value\n while sorting extended attributes. An attacker could possibly use this\n issue to cause a denial of service. (CVE-2026-41035)\n\n It was discovered that rsync performed reverse-DNS lookups after\n chrooting in some daemon configurations. A remote attacker could\n possibly use this issue to bypass hostname-based access controls and\n access network services. (CVE-2026-43617)\n\n Omar Elsayed discovered that rsync did not properly check for integer\n overflows while decoding compressed tokens. A remote attacker could\n possibly use this issue to obtain sensitive information.\n (CVE-2026-43618)\n\n Andrew Tridgell discovered that rsync did not fully fix a symlink race\n condition in path-based system calls for daemons configured without\n chroot protection. A local attacker could possibly use this issue to\n overwrite files, obtain sensitive information, or escalate privileges.\n (CVE-2026-43619)\n\n Pratham Gupta discovered that rsync did not properly validate an index\n while processing file lists. A remote attacker could possibly use this\n issue to cause rsync to crash, resulting in a denial of service.\n (CVE-2026-43620)\n\n Michal Ruprich discovered that rsync contained an off-by-one error\n while handling HTTP proxy responses. An attacker able to intercept network\n communications or a malicious proxy server could possibly use this issue to\n cause a denial of service. (CVE-2026-45232)","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-06-16T07:31:50Z","modified":"2026-06-16T13:44:18Z","fixes":[{"ecosystem":"Ubuntu:Pro:14.04:LTS","package":"rsync","fixed_in":["3.1.0-2ubuntu0.4+esm4"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"rsync","fixed_in":["3.1.1-3ubuntu1.3+esm6"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"rsync","fixed_in":["3.1.2-2.1ubuntu1.6+esm4"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"rsync","fixed_in":["3.1.3-8ubuntu0.9+esm2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:14.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.0-2ubuntu0.4+esm4"}]}],"versions":["3.0.9-4ubuntu1","3.1.0-2","3.1.0-2ubuntu0.1","3.1.0-2ubuntu0.2","3.1.0-2ubuntu0.3","3.1.0-2ubuntu0.4","3.1.0-2ubuntu0.4+esm1","3.1.0-2ubuntu0.4+esm2","3.1.0-2ubuntu0.4+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.1-3ubuntu1.3+esm6"}]}],"versions":["3.1.1-3","3.1.1-3ubuntu1","3.1.1-3ubuntu1.1","3.1.1-3ubuntu1.2","3.1.1-3ubuntu1.3","3.1.1-3ubuntu1.3+esm1","3.1.1-3ubuntu1.3+esm2","3.1.1-3ubuntu1.3+esm3","3.1.1-3ubuntu1.3+esm4","3.1.1-3ubuntu1.3+esm5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.2-2.1ubuntu1.6+esm4"}]}],"versions":["3.1.2-2","3.1.2-2.1","3.1.2-2.1ubuntu1","3.1.2-2.1ubuntu1.1","3.1.2-2.1ubuntu1.2","3.1.2-2.1ubuntu1.3","3.1.2-2.1ubuntu1.4","3.1.2-2.1ubuntu1.5","3.1.2-2.1ubuntu1.6","3.1.2-2.1ubuntu1.6+esm1","3.1.2-2.1ubuntu1.6+esm2","3.1.2-2.1ubuntu1.6+esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"rsync","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.3-8ubuntu0.9+esm2"}]}],"versions":["3.1.3-6","3.1.3-8","3.1.3-8ubuntu0.1","3.1.3-8ubuntu0.2","3.1.3-8ubuntu0.3","3.1.3-8ubuntu0.4","3.1.3-8ubuntu0.5","3.1.3-8ubuntu0.7","3.1.3-8ubuntu0.8","3.1.3-8ubuntu0.9","3.1.3-8ubuntu0.9+esm1"]}],"references":[{"url":"https://ubuntu.com/security/notices/USN-8349-3","tags":["advisory"]},{"url":"https://launchpad.net/bugs/2155874","tags":["report"]}],"sources":{"osv":[{"id":"USN-8349-3","title":"rsync regression","description":"USN-8349-1 fixed vulnerabilities in rsync. Unfortunately that update introduced multiple\nregressions in rsync functionality. This update fixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Calum Hutton discovered that rsync contained a heap-based out-of-bounds\n read when handling file transfers. A remote attacker with read access\n to an rsync server could possibly use this issue to cause a denial of\n service. (CVE-2025-10158)\n\n Batuhan Sancak, Damien Neil, and Michael Stapelberg discovered that\n rsync daemons configured without chroot protection were exposed to a\n race condition on parent path components. A local attacker with write\n access to a module could possibly use this issue to overwrite files,\n obtain sensitive information, or escalate privileges.\n (CVE-2026-29518)\n\n It was discovered that rsync did not properly validate a length value\n while sorting extended attributes. An attacker could possibly use this\n issue to cause a denial of service. (CVE-2026-41035)\n\n It was discovered that rsync performed reverse-DNS lookups after\n chrooting in some daemon configurations. A remote attacker could\n possibly use this issue to bypass hostname-based access controls and\n access network services. (CVE-2026-43617)\n\n Omar Elsayed discovered that rsync did not properly check for integer\n overflows while decoding compressed tokens. A remote attacker could\n possibly use this issue to obtain sensitive information.\n (CVE-2026-43618)\n\n Andrew Tridgell discovered that rsync did not fully fix a symlink race\n condition in path-based system calls for daemons configured without\n chroot protection. A local attacker could possibly use this issue to\n overwrite files, obtain sensitive information, or escalate privileges.\n (CVE-2026-43619)\n\n Pratham Gupta discovered that rsync did not properly validate an index\n while processing file lists. A remote attacker could possibly use this\n issue to cause rsync to crash, resulting in a denial of service.\n (CVE-2026-43620)\n\n Michal Ruprich discovered that rsync contained an off-by-one error\n while handling HTTP proxy responses. An attacker able to intercept network\n communications or a malicious proxy server could possibly use this issue to\n cause a denial of service. (CVE-2026-45232)","status":"published","published":"2026-06-16T07:31:50Z","modified":"2026-06-16T13:44:18.711150494Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}