CVE-2025-21808 (GCVE-0-2025-21808)
Vulnerability from cvelistv5
Published
2025-02-27 20:01
Modified
2025-05-04 07:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: xdp: Disallow attaching device-bound programs in generic mode Device-bound programs are used to support RX metadata kfuncs. These kfuncs are driver-specific and rely on the driver context to read the metadata. This means they can't work in generic XDP mode. However, there is no check to disallow such programs from being attached in generic mode, in which case the metadata kfuncs will be called in an invalid context, leading to crashes. Fix this by adding a check to disallow attaching device-bound programs in generic mode.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1
Version: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1
Version: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1
Version: 2b3486bc2d237ec345b3942b7be5deabf8c8fed1
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b1bc4a35a04cbeb85b6ef5911ec015baa424989f",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "557707906dd3e34b8a8c265f664d19f95799937e",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            },
            {
              "lessThan": "3595599fa8360bb3c7afa7ee50c810b4a64106ea",
              "status": "affected",
              "version": "2b3486bc2d237ec345b3942b7be5deabf8c8fed1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.76",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.14",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.76",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.13",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.2",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xdp: Disallow attaching device-bound programs in generic mode\n\nDevice-bound programs are used to support RX metadata kfuncs. These\nkfuncs are driver-specific and rely on the driver context to read the\nmetadata. This means they can\u0027t work in generic XDP mode. However, there\nis no check to disallow such programs from being attached in generic\nmode, in which case the metadata kfuncs will be called in an invalid\ncontext, leading to crashes.\n\nFix this by adding a check to disallow attaching device-bound programs\nin generic mode."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T07:21:38.647Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f"
        },
        {
          "url": "https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1"
        },
        {
          "url": "https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea"
        }
      ],
      "title": "net: xdp: Disallow attaching device-bound programs in generic mode",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21808",
    "datePublished": "2025-02-27T20:01:00.328Z",
    "dateReserved": "2024-12-29T08:45:45.772Z",
    "dateUpdated": "2025-05-04T07:21:38.647Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21808\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-27T20:16:03.410\",\"lastModified\":\"2025-02-27T20:16:03.410\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: xdp: Disallow attaching device-bound programs in generic mode\\n\\nDevice-bound programs are used to support RX metadata kfuncs. These\\nkfuncs are driver-specific and rely on the driver context to read the\\nmetadata. This means they can\u0027t work in generic XDP mode. However, there\\nis no check to disallow such programs from being attached in generic\\nmode, in which case the metadata kfuncs will be called in an invalid\\ncontext, leading to crashes.\\n\\nFix this by adding a check to disallow attaching device-bound programs\\nin generic mode.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: xdp: No permitir adjuntar programas vinculados al dispositivo en modo gen\u00e9rico Los programas vinculados al dispositivo se utilizan para admitir las kfuncs de metadatos RX. Estas kfuncs son espec\u00edficas del controlador y dependen del contexto del controlador para leer los metadatos. Esto significa que no pueden funcionar en modo XDP gen\u00e9rico. Sin embargo, no hay ninguna verificaci\u00f3n para no permitir que dichos programas se adjunten en modo gen\u00e9rico, en cuyo caso las kfuncs de metadatos se llamar\u00e1n en un contexto no v\u00e1lido, lo que provocar\u00e1 fallas. Solucione esto agregando una verificaci\u00f3n para no permitir adjuntar programas vinculados al dispositivo en modo gen\u00e9rico.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3595599fa8360bb3c7afa7ee50c810b4a64106ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/557707906dd3e34b8a8c265f664d19f95799937e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5a9eae683d6c36e8a7aa31e5eb8b369e41aa66e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b1bc4a35a04cbeb85b6ef5911ec015baa424989f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.