CVE-2026-70462
published 2026-08-13CVE-2026-70462: rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable…
PriorityP431medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.26%
17.8th percentile
rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| rsyncproject | rsync | 3.1.0 – 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-2026-70462 rsync-bpc: rsync: Denial of Service via signed integer overflow in I/O timeout [epel-all]
bugzilla·2026-08-21·CVSS 6.5
CVE-2026-70462 [MEDIUM] CVE-2026-70462 rsync-bpc: rsync: Denial of Service via signed integer overflow in I/O timeout [epel-all]
CVE-2026-70462 rsync-bpc: rsync: Denial of Service via signed integer overflow in I/O timeout [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 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold d
Bugzilla
CVE-2026-70462 rsync-bpc: rsync: Denial of Service via signed integer overflow in I/O timeout [fedora-all]
bugzilla·2026-08-21·CVSS 6.5
CVE-2026-70462 [MEDIUM] CVE-2026-70462 rsync-bpc: rsync: Denial of Service via signed integer overflow in I/O timeout [fedora-all]
CVE-2026-70462 rsync-bpc: rsync: Denial of Service via signed integer overflow in I/O timeout [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 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold
Bugzilla
CVE-2026-70462 rsync: rsync: Denial of Service via signed integer overflow in I/O timeout [fedora-all]
bugzilla·2026-08-21·CVSS 6.5
CVE-2026-70462 [MEDIUM] CVE-2026-70462 rsync: rsync: Denial of Service via signed integer overflow in I/O timeout [fedora-all]
CVE-2026-70462 rsync: rsync: Denial of Service via signed integer overflow in I/O timeout [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 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold dae
Bugzilla
CVE-2026-70462 rsync: rsync: Denial of Service via signed integer overflow in I/O timeout
bugzilla·2026-08-13·CVSS 6.5
CVE-2026-70462 [MEDIUM] CVE-2026-70462 rsync: rsync: Denial of Service via signed integer overflow in I/O timeout
CVE-2026-70462 rsync: rsync: Denial of Service via signed integer overflow in I/O timeout
rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion.
2026-08-13
Published