CVE-2026-70453 affecting package rsync for versions less than 3.5.0-1
rsync before 3.5.0 contains an algorithmic complexity vulnerability in the hash_search() function that allows a remote attacker to cause a denial of service by delivering a carefully constructed file list. A sender can exploit the quadratic-time worst-case behavior in hash lookups to exhaust receiver CPU resources with a modest number of crafted entries, causing a sustained denial of service.
AZL-95855
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:AZL-95855
rsync
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 3.5.0-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.0-1"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:rpm/azure-linux/rsync",
"ecosystem": "Azure Linux:3"
},
"database_specific": {
"source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-95855.json"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #13938 · Revision 1
- Added to Heist Feed
- Publisher date