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rsync: Fix of CVE-2026-45232

Type: advisorySources: OSV

- CVE-2026-45232: fix off-by-one out-of-bounds stack write in establish_proxy_connection() when a malicious HTTP proxy returns an over-long response line without a newline; reject the buffer-full case instead of writing the NUL terminator one byte past the buffer

Products
rsync, rsync-daemon
Affected versions
Not specified
Fixed versions
3.2.3-19.el9_2.tuxcare.els11
CVEs
CVE-2026-45232
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 10:41 UTC · Revision 1

Source evidence

rsync: Fix of CVE-2026-45232

core-osv · Original source

Published 2 Jul 2026, 08:36 UTC

- CVE-2026-45232: fix off-by-one out-of-bounds stack write in establish_proxy_connection() when a malicious HTTP proxy returns an over-long response line without a newline; reject the buffer-full case instead of writing the NUL terminator one byte past the buffer

osv:CLSA-2026-1782981361

rsync

Fixed versions: 3.2.3-19.el9_2.tuxcare.els11

rsync-daemon

Fixed versions: 3.2.3-19.el9_2.tuxcare.els11

Complete source record
{
  "id": "16d80003c702a7ab6ff8d45c60290ea86691a53a15a26c3ec260b49a923927b5",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1782981361",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "rsync: Fix of CVE-2026-45232",
    "summary": "- CVE-2026-45232: fix off-by-one out-of-bounds stack write in establish_proxy_connection() when a malicious HTTP proxy returns an over-long response line without a newline; reject the buffer-full case instead of writing the NUL terminator one byte past the buffer",
    "evidence": "osv:CLSA-2026-1782981361",
    "products": [
      {
        "name": {
          "value": "rsync",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.2.3-19.el9_2.tuxcare.els11",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "rsync-daemon",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.2.3-19.el9_2.tuxcare.els11",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1782981361",
      "aliases": [
        "CLSA-2026-1782981361"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.2.3-19.el9_2.tuxcare.els11"
                }
              ]
            }
          ],
          "package": {
            "name": "rsync",
            "purl": "pkg:rpm/tuxcare/rsync?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1782981361.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.2.3-19.el9_2.tuxcare.els11"
                }
              ]
            }
          ],
          "package": {
            "name": "rsync-daemon",
            "purl": "pkg:rpm/tuxcare/rsync-daemon?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1782981361.json"
          }
        }
      ],
      "modified": "2026-10-26T09:30:24.040932896Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-45232"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1782981361.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45232"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-45232",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 447018,
  "published_at": "2026-07-02T08:36:15+00:00"
}