CVE-2026-53792
published 2026-08-13CVE-2026-53792: 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…
PriorityP432medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.31%
23.6th percentile
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
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| rsyncproject | rsync | <= 3.4.4 | — |
| samba | rsync | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vendor_redhat6.5MEDIUM
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Bugzilla
CVE-2026-53792 rsync: rsync: Denial of Service via out-of-bounds read with crafted checksum block [fedora-all]
bugzilla·2026-08-19·CVSS 6.5
CVE-2026-53792 [MEDIUM] CVE-2026-53792 rsync: rsync: Denial of Service via out-of-bounds read with crafted checksum block [fedora-all]
CVE-2026-53792 rsync: rsync: Denial of Service via out-of-bounds read with crafted checksum block [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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
Bugzilla
CVE-2026-53792 rsync-bpc: rsync: Denial of Service via out-of-bounds read with crafted checksum block [fedora-all]
bugzilla·2026-08-19·CVSS 6.5
CVE-2026-53792 [MEDIUM] CVE-2026-53792 rsync-bpc: rsync: Denial of Service via out-of-bounds read with crafted checksum block [fedora-all]
CVE-2026-53792 rsync-bpc: rsync: Denial of Service via out-of-bounds read with crafted checksum block [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 bu
Bugzilla
CVE-2026-53792 rsync-bpc: rsync: Denial of Service via out-of-bounds read with crafted checksum block [epel-all]
bugzilla·2026-08-19·CVSS 6.5
CVE-2026-53792 [MEDIUM] CVE-2026-53792 rsync-bpc: rsync: Denial of Service via out-of-bounds read with crafted checksum block [epel-all]
CVE-2026-53792 rsync-bpc: rsync: Denial of Service via out-of-bounds read with crafted checksum block [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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 buff
Bugzilla
CVE-2026-53792 rsync: rsync: Denial of Service via out-of-bounds read with crafted checksum block
bugzilla·2026-08-13·CVSS 6.5
CVE-2026-53792 [MEDIUM] CVE-2026-53792 rsync: rsync: Denial of Service via out-of-bounds read with crafted checksum block
CVE-2026-53792 rsync: rsync: Denial of Service via out-of-bounds read with crafted checksum block
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.
2026-08-13
Published