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linux-lts — security advisory

Type: advisorySources: OSVAdvisory ID: ALPINE-CVE-2023-46838

Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.

Products
linux-lts
Affected versions
Not specified
Fixed versions
5.15.147-r1, 6.1.74-r0
CVEs
CVE-2023-46838
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 15:01 UTC · Revision 1

Source evidence

ALPINE-CVE-2023-46838

core-osv · Original source

Published 29 Jan 2024, 11:15 UTC

Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.

osv:ALPINE-CVE-2023-46838

linux-lts

Fixed versions: 5.15.147-r1

linux-lts

Fixed versions: 5.15.147-r1

linux-lts

Fixed versions: 6.1.74-r0

Complete source record
{
  "id": "06aee8a9120f82056f306bd3e2557675c1e93be2048b2bca661b00a9cc0445cc",
  "url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-46838",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALPINE-CVE-2023-46838",
    "summary": "Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.",
    "evidence": "osv:ALPINE-CVE-2023-46838",
    "products": [
      {
        "name": {
          "value": "linux-lts",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.147-r1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "linux-lts",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.15.147-r1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "linux-lts",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.74-r0",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "ALPINE-CVE-2023-46838",
      "aliases": [
        "ALPINE-CVE-2023-46838"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.15.147-r1"
                }
              ]
            }
          ],
          "package": {
            "name": "linux-lts",
            "purl": "pkg:apk/alpine/linux-lts?arch=source",
            "ecosystem": "Alpine:v3.16"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-46838.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5.15.147-r1"
                }
              ]
            }
          ],
          "package": {
            "name": "linux-lts",
            "purl": "pkg:apk/alpine/linux-lts?arch=source",
            "ecosystem": "Alpine:v3.17"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-46838.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.1.74-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "linux-lts",
            "purl": "pkg:apk/alpine/linux-lts?arch=source",
            "ecosystem": "Alpine:v3.18"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2023-46838.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-26T17:17:58.649734070Z",
      "provider": "osv",
      "upstream": [
        "CVE-2023-46838"
      ],
      "references": [
        "https://security.alpinelinux.org/vuln/CVE-2023-46838"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2023-46838",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 454527,
  "published_at": "2024-01-29T11:15:07.933+00:00"
}