CVE-2026-43618
Publication date 20 May 2026
Last updated 20 May 2026
Ubuntu priority
Description
The receiver's compressed-token decoder accumulated a 32-bit signed counter without overflow checking. A malicious sender can trigger an overflow that, with careful manipulation, leaks process memory contents to the attacker -- environment variables, passwords, heap and library pointers - -- significantly weakening ASLR and facilitating further exploitation.
Why is this CVE high priority?
rsync developers have rated this as being a high severity issue
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| rsync | 26.04 LTS resolute |
Fixed 3.4.1+ds1-7ubuntu0.2
|
| 25.10 questing |
Fixed 3.4.1+ds1-5ubuntu1.2
|
|
| 24.04 LTS noble |
Fixed 3.2.7-1ubuntu1.4
|
|
| 22.04 LTS jammy |
Fixed 3.2.7-0ubuntu0.22.04.6
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
References
Related Ubuntu Security Notices (USN)
- USN-8283-1
- rsync vulnerabilities
- 20 May 2026