A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.
CVE-2024-12084
CVSS base score
9.8 (v3.1)
Severity
CRITICAL
Attack vector
Network
Weakness
CWE-122, CWE-787
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
samba rsync
almalinux almalinux
archlinux arch linux
gentoo linux
nixos nixos
novell suse linux
tritondatacenter smartos
redhat enterprise linux
References
- access.redhat.com
- access.redhat.com Third Party Advisory
- bugzilla.redhat.com Issue Tracking, Third Party Advisory
- kb.cert.org Third Party Advisory
- www.openwall.com Mailing List, Third Party Advisory
- security.netapp.com
- www.kb.cert.org
- github.com Exploit, Vendor Advisory