Skip to content
Heist/ feed
Back to feed
Unrated

Security advisory

Type: advisorySources: OSVCVE: CVE-2022-26495

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2022-26495
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 18:40 UTC · Revision 1

Source evidence

CVE-2022-26495

core-osv · Original source

Published 6 Mar 2022, 00:00 UTC

In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.

osv:CVE-2022-26495
Complete source record
{
  "id": "536a672955ebeade924cd7120001a1eef92c859bb481541e8587e291f3998f5d",
  "url": "https://osv.dev/vulnerability/CVE-2022-26495",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2022-26495",
    "summary": "In nbd-server in nbd before 3.24, there is an integer overflow with a resultant heap-based buffer overflow. A value of 0xffffffff in the name length field will cause a zero-sized buffer to be allocated for the name, resulting in a write to a dangling pointer. This issue exists for the NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages.",
    "evidence": "osv:CVE-2022-26495",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2022-26495",
      "aliases": [
        "CVE-2022-26495"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/networkblockdevice/nbd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "ca2b9b33890e430a76b57f83cdabe80c64b12829"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:network_block_device_project:network_block_device:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.24"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "nbd-3.23",
            "nbd-3.22",
            "nbd-3.21",
            "nbd-3.20",
            "nbd-3.19",
            "nbd-3.18",
            "nbd-3.17",
            "nbd-3.16.2",
            "nbd-3.16.1",
            "nbd-3.16",
            "nbd-3.15.2",
            "nbd-3.7",
            "nbd-3.15.1",
            "nbd-3.15",
            "nbd-3.13",
            "nbd-3.12.1",
            "nbd-3.12",
            "nbd-3.12pre1",
            "nbd-3.11",
            "nbd-3.10",
            "nbd-3.9.1",
            "nbd-3.9",
            "nbd-3.8",
            "nbd-3.6",
            "nbd-3.5",
            "nbd-3.4",
            "nbd-3.3",
            "nbd-3.2",
            "nbd-3.1.1",
            "nbd-3.1",
            "nbd-3.0",
            "nbd-2.9.25",
            "nbd-2.9.24",
            "nbd-2.9.23",
            "nbd-2.9.22",
            "2.9.21a",
            "2.9.21",
            "2.9.20",
            "2.9.19",
            "2.9.18",
            "2.9.17",
            "2.9.16",
            "2.9.15",
            "git-2.9.14",
            "2.9.14",
            "git-2.9.13",
            "2.9.13",
            "git-2.9.12",
            "2.9.12",
            "2.9.11",
            "2.9.10",
            "2.9.8",
            "2.9.7",
            "2.9.6",
            "2.9.3",
            "2.9.2",
            "2.9.1",
            "2.9.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-26495.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.207160701Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/nbd/2022/01/msg00037.html",
        "https://sourceforge.net/projects/nbd/files/nbd/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/26xxx/CVE-2022-26495.json",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G2UPX62BIWOOHSACGUDB7E3O4URNN37F/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZHR73XMAJTCFGKUZRXVTZKCK2X3IFNA/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PU5JFD4PEJED72TZLZ5R2Q2SFXICU5I5/",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-26495",
        "https://security.gentoo.org/glsa/202402-10",
        "https://www.debian.org/security/2022/dsa-5100",
        "https://lists.debian.org/debian-lts-announce/2022/03/msg00014.html"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/26xxx/CVE-2022-26495.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-26495",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505780,
  "published_at": "2022-03-06T00:00:00+00:00"
}