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7.1 High

CVE-2026-53792 rsync before 3.5.0 contains an out-of-bounds read vulnerability in the sender-side block matching logic that allows a…

Description

rsync before 3.5.0 contains an out-of-bounds read vulnerability in the sender-side block matching logic that allows a malicious receiver to trigger memory access before the start of an allocated buffer by sending a crafted checksum block with a length of zero. Attackers can send a specially crafted checksum set containing a zero-length block to cause a negative offset calculation during delta computation, resulting in an out-of-bounds read of file data buffer memory on the sender side.

Affected products and versions

Product Affected versions Fixed in
rsync 3.5 earliest → < 3.5.0 3.5.0
rsync 3.4 earliest → 3.4.4 No fix stated

References

Timeline

  1. Published
  2. Last modified

Other CVEs of rsync

The 44 CVEs of rsync →
CVE-2026-119741 rsync < 3.5.2 Denial of Service via hash_search() Checksum Collisions 8.7 High CVE-2026-70452 rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent… 9.1 Critical CVE-2026-70453 rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote… 8.7 High CVE-2026-70454 rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation… 7.6 High
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