UBUNTU-CVE-2026-119053 (CVE-2026-119053)

Vulnerability from osv_ubuntu – Published: 2026-10-30 00:00 – Updated: 2026-10-30 00:00 – Source website
VLAI
Details

lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf->len instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0",
            "binary_version": "2.1.2+dfsg1-4ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.1.2+dfsg1-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2-3",
        "2.1.2-5.1",
        "2.1.2+dfsg1-1",
        "2.1.2+dfsg1-4",
        "2.1.2+dfsg1-4ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0",
            "binary_version": "2.1.3+dfsg1-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.1.3+dfsg1-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.2+dfsg1-8",
        "2.1.2+dfsg1-9",
        "2.1.3+dfsg1-1",
        "2.1.3+dfsg1-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.0+dfsg1-6.1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.0+dfsg1-6.1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.3+dfsg1-2",
        "2.1.3+dfsg1-4",
        "2.2.0+dfsg1-2",
        "2.2.0+dfsg1-3",
        "2.2.0+dfsg1-4",
        "2.2.0+dfsg1-5",
        "2.2.0+dfsg1-6",
        "2.2.0+dfsg1-6.1",
        "2.2.0+dfsg1-6.1build1",
        "2.2.0+dfsg1-6.1build2",
        "2.2.0+dfsg1-6.1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.1+dfsg1-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.1+dfsg1-7?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1+dfsg1-4",
        "2.2.1+dfsg1-5",
        "2.2.1+dfsg1-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "liblwip0t64",
            "binary_version": "2.2.1+dfsg1-4ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:26.04:LTS",
        "name": "lwip",
        "purl": "pkg:deb/ubuntu/lwip@2.2.1+dfsg1-4ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.1+dfsg1-2",
        "2.2.1+dfsg1-3",
        "2.2.1+dfsg1-4",
        "2.2.1+dfsg1-4ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "lwIP 2.0.0 through 2.2.1 built with the SNMP agent contains an out-of-bounds read vulnerability in snmp_pbuf_stream_writeto() that bounds copies by pbuf-\u003elen instead of remaining bytes. Remote unauthenticated attackers knowing the read community can send fragmented SNMP requests to receive adjacent receive-buffer or pool memory echoed in responses.",
  "id": "UBUNTU-CVE-2026-119053",
  "modified": "2026-10-30T00:00:00Z",
  "published": "2026-10-30T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-119053"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-119053"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lwip-tcpip/lwip"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lwip-tcpip/lwip/blob/77dcd25a72509eb83f72b033d219b1d40cd8eb95/src/apps/snmp/snmp_pbuf_stream.c#L111-L122"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/lwip-tcpip/lwip/commit/e98415014aca66ef0daefded8020763b9279a3b2"
    },
    {
      "type": "REPORT",
      "url": "https://www.vulncheck.com/advisories/lwip-2.0.0-through-2.2.1-snmp-agent-out-of-bounds-read-via-snmp-pbuf-stream-writeto"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-119053"
  ]
}



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