Skip to content
CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-53794

rsync < 3.5.0 Denial of Service via --max-alloc=0 Logic Error

Description

rsync before 3.5.0 contains a logic error in --max-alloc handling that allows a sender or configuration setting --max-alloc=0 to disable allocation sanity checks entirely rather than enforcing a zero-byte cap. Attackers can exploit this flaw to cause the receiver to attempt unbounded memory allocations for file list and data structures, potentially exhausting available memory and causing a denial of service.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

RsyncProject rsync

Default version status: unaffected

  • 0 to ≤ 3.4.4affected
  • 3.5.0unaffected
pkg:github/RsyncProject/rsync

References