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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-190",
"CWE-835"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70462.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "3.1.0"
},
{
"last_affected": "3.4.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"original_tag": "v3.5.0",
"range": [
{
"fixed": "471e17dc0d68233db84db11be82c9f62f4661214"
}
],
"source": "REFERENCES_TAG"
}
]
}