CVE-2025-21898 (GCVE-0-2025-21898)

Vulnerability from cvelistv5 – Published: 2025-04-01 15:26 – Updated: 2026-05-23 15:57
VLAI
Title
ftrace: Avoid potential division by zero in function_stat_show()
Summary
In the Linux kernel, the following vulnerability has been resolved: ftrace: Avoid potential division by zero in function_stat_show() Check whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64} produce zero and skip stddev computation in that case. For now don't care about rec->counter * rec->counter overflow because rec->time * rec->time overflow will likely happen earlier.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f0629ee3922f10112584b1898491fecc74d98b3b , < 5b3d32f607f0478b414b16516cf27f9170cf66c8 (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < ca381f60a3bb7cfaa618d73ca411610bd7fc3149 (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < 3d738b53ed6cddb68e68c9874520a4bf846163b5 (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < 992775227843c9376773784b8b362add44592ad7 (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3 (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < 746cc474a95473591853927b3a9792a2d671155b (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < 9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6 (git)
Affected: e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d , < a1a7eb89ca0b89dc1c326eeee2596f263291aca3 (git)
Affected: c59e74104cfd7df3ca0b5f59f1baee9c8c28b9ef (git)
Affected: 015f0fd0fcc338513f80044add27fa46cf71d217 (git)
Affected: 1a2985af2a20b816a5cc41a2ddc1c4109ef6b9c6 (git)
Affected: 7650b4b1df091815bbbbb837d308dd4154684f8a (git)
Affected: 010a7e846d4beaf34384c40ff18d5de10106d9b4 (git)
Affected: 5.4.9 , < 5.4.291 (semver)
Affected: 3.16.83 , < 3.17 (semver)
Affected: 4.4.209 , < 4.5 (semver)
Affected: 4.9.209 , < 4.10 (semver)
Affected: 4.14.163 , < 4.15 (semver)
Affected: 4.19.94 , < 4.20 (semver)
Create a notification for this product.
Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.4.291 , ≤ 5.4.* (semver)
Unaffected: 5.10.235 , ≤ 5.10.* (semver)
Unaffected: 5.15.179 , ≤ 5.15.* (semver)
Unaffected: 6.1.130 , ≤ 6.1.* (semver)
Unaffected: 6.6.81 , ≤ 6.6.* (semver)
Unaffected: 6.12.18 , ≤ 6.12.* (semver)
Unaffected: 6.13.6 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-21898",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-01T17:18:13.401520Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-369",
                "description": "CWE-369 Divide By Zero",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-01T17:18:15.822Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T19:38:44.454Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/ftrace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5b3d32f607f0478b414b16516cf27f9170cf66c8",
              "status": "affected",
              "version": "f0629ee3922f10112584b1898491fecc74d98b3b",
              "versionType": "git"
            },
            {
              "lessThan": "ca381f60a3bb7cfaa618d73ca411610bd7fc3149",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "lessThan": "3d738b53ed6cddb68e68c9874520a4bf846163b5",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "lessThan": "992775227843c9376773784b8b362add44592ad7",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "lessThan": "f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "lessThan": "746cc474a95473591853927b3a9792a2d671155b",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "lessThan": "9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "lessThan": "a1a7eb89ca0b89dc1c326eeee2596f263291aca3",
              "status": "affected",
              "version": "e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c59e74104cfd7df3ca0b5f59f1baee9c8c28b9ef",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "015f0fd0fcc338513f80044add27fa46cf71d217",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1a2985af2a20b816a5cc41a2ddc1c4109ef6b9c6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7650b4b1df091815bbbbb837d308dd4154684f8a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "010a7e846d4beaf34384c40ff18d5de10106d9b4",
              "versionType": "git"
            },
            {
              "lessThan": "5.4.291",
              "status": "affected",
              "version": "5.4.9",
              "versionType": "semver"
            },
            {
              "lessThan": "3.17",
              "status": "affected",
              "version": "3.16.83",
              "versionType": "semver"
            },
            {
              "lessThan": "4.5",
              "status": "affected",
              "version": "4.4.209",
              "versionType": "semver"
            },
            {
              "lessThan": "4.10",
              "status": "affected",
              "version": "4.9.209",
              "versionType": "semver"
            },
            {
              "lessThan": "4.15",
              "status": "affected",
              "version": "4.14.163",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.94",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/ftrace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.179",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.130",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.81",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.6",
              "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": "5.4.291",
                  "versionStartIncluding": "5.4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.235",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.179",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.130",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.81",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.18",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.6",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.16.83",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.209",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.9.209",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.14.163",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.94",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nftrace: Avoid potential division by zero in function_stat_show()\n\nCheck whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64}\nproduce zero and skip stddev computation in that case.\n\nFor now don\u0027t care about rec-\u003ecounter * rec-\u003ecounter overflow because\nrec-\u003etime * rec-\u003etime overflow will likely happen earlier."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:57:23.790Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5b3d32f607f0478b414b16516cf27f9170cf66c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca381f60a3bb7cfaa618d73ca411610bd7fc3149"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d738b53ed6cddb68e68c9874520a4bf846163b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/992775227843c9376773784b8b362add44592ad7"
        },
        {
          "url": "https://git.kernel.org/stable/c/f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3"
        },
        {
          "url": "https://git.kernel.org/stable/c/746cc474a95473591853927b3a9792a2d671155b"
        },
        {
          "url": "https://git.kernel.org/stable/c/9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6"
        },
        {
          "url": "https://git.kernel.org/stable/c/a1a7eb89ca0b89dc1c326eeee2596f263291aca3"
        }
      ],
      "title": "ftrace: Avoid potential division by zero in function_stat_show()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21898",
    "datePublished": "2025-04-01T15:26:50.211Z",
    "dateReserved": "2024-12-29T08:45:45.783Z",
    "dateUpdated": "2026-05-23T15:57:23.790Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-21898",
      "date": "2026-07-23",
      "epss": "0.002",
      "percentile": "0.10104"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-21T02:46:50.000Z",
      "cve": "CVE-2025-21898",
      "id": "msrc_CVE-2025-21898",
      "initial_release_date": "2025-04-02T00:00:00.000Z",
      "product_status:fixed": "3",
      "product_status:known_affected": "3",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "ftrace: Avoid potential division by zero in function_stat_show()",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-21898.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21898\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-01T16:15:20.190\",\"lastModified\":\"2026-06-17T08:44:33.520\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nftrace: Avoid potential division by zero in function_stat_show()\\n\\nCheck whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64}\\nproduce zero and skip stddev computation in that case.\\n\\nFor now don\u0027t care about rec-\u003ecounter * rec-\u003ecounter overflow because\\nrec-\u003etime * rec-\u003etime overflow will likely happen earlier.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ftrace: Evitar la posible divisi\u00f3n por cero en function_stat_show(). Comprueba si la expresi\u00f3n del denominador x * (x - 1) * 1000 mod {2^32, 2^64} produce cero y omite el c\u00e1lculo de la desviaci\u00f3n est\u00e1ndar en ese caso. Por ahora, no se debe preocupar el desbordamiento de rec-\u0026gt;counter * rec-\u0026gt;counter, ya que es probable que el desbordamiento de rec-\u0026gt;time * rec-\u0026gt;time ocurra antes.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"kernel/trace/ftrace.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f0629ee3922f10112584b1898491fecc74d98b3b\",\"lessThan\":\"5b3d32f607f0478b414b16516cf27f9170cf66c8\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"ca381f60a3bb7cfaa618d73ca411610bd7fc3149\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"3d738b53ed6cddb68e68c9874520a4bf846163b5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"992775227843c9376773784b8b362add44592ad7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"746cc474a95473591853927b3a9792a2d671155b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\",\"lessThan\":\"a1a7eb89ca0b89dc1c326eeee2596f263291aca3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c59e74104cfd7df3ca0b5f59f1baee9c8c28b9ef\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"015f0fd0fcc338513f80044add27fa46cf71d217\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a2985af2a20b816a5cc41a2ddc1c4109ef6b9c6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7650b4b1df091815bbbbb837d308dd4154684f8a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"010a7e846d4beaf34384c40ff18d5de10106d9b4\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.4.9\",\"lessThan\":\"5.4.291\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"3.16.83\",\"lessThan\":\"3.17\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.4.209\",\"lessThan\":\"4.5\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.9.209\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.14.163\",\"lessThan\":\"4.15\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.94\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"kernel/trace/ftrace.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.291\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.235\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.179\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.130\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.81\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.18\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13.6\",\"lessThanOrEqual\":\"6.13.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2025-10-01T17:18:13.401520Z\",\"id\":\"CVE-2025-21898\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-369\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-369\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.16.83\",\"versionEndExcluding\":\"3.17\",\"matchCriteriaId\":\"757FC3F8-D35F-4A41-B2EE-FB159111EF5D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.4.206\",\"versionEndExcluding\":\"4.5\",\"matchCriteriaId\":\"3D5B7E72-C27C-4C31-9E9E-606FDC335075\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.9.209\",\"versionEndExcluding\":\"4.10\",\"matchCriteriaId\":\"1A115D9F-96E6-495B-BC92-F65060DFBC65\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.14.163\",\"versionEndExcluding\":\"4.15\",\"matchCriteriaId\":\"24E04FDC-DEED-4DE9-8C4A-F7C00CA031A5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.94\",\"versionEndExcluding\":\"4.20\",\"matchCriteriaId\":\"F5BA5A4D-A5CD-44A1-8218-8E24CA61F09B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.4.9\",\"versionEndExcluding\":\"5.4.291\",\"matchCriteriaId\":\"23436DA5-C15F-4913-A3E7-36F70A45D768\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.235\",\"matchCriteriaId\":\"545121FA-DE31-4154-9446-C2000FB4104D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.179\",\"matchCriteriaId\":\"C708062C-4E1B-465F-AE6D-C09C46400875\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.130\",\"matchCriteriaId\":\"26997835-273D-4841-ABD3-4696059AC299\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.81\",\"matchCriteriaId\":\"8C92C9CD-2ADE-412E-A7FF-DC9E0630B25D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.18\",\"matchCriteriaId\":\"3D5C8D9A-4013-4C1A-810F-AA540BB5737C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.6\",\"matchCriteriaId\":\"64F12D9B-71C2-4CD7-A288-0D5EF1709620\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"186716B6-2B66-4BD0-852E-D48E71C0C85F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"0D3E781C-403A-498F-9DA9-ECEE50F41E75\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"66619FB8-0AAF-4166-B2CF-67B24143261D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.14:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3D6550E-6679-4560-902D-AF52DCFE905B\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3d738b53ed6cddb68e68c9874520a4bf846163b5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5b3d32f607f0478b414b16516cf27f9170cf66c8\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/746cc474a95473591853927b3a9792a2d671155b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/992775227843c9376773784b8b362add44592ad7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a1a7eb89ca0b89dc1c326eeee2596f263291aca3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ca381f60a3bb7cfaa618d73ca411610bd7fc3149\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:21:45+00:00",
      "cve": "CVE-2025-21898",
      "id": "CVE-2025-21898",
      "initial_release_date": "2025-04-01T00:00:00+00:00",
      "product_status:known_affected": "226",
      "product_status:known_not_affected": "48",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ftrace: Avoid potential division by zero in function_stat_show()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21898.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T19:38:44.454Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-21898\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-01T17:18:13.401520Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-369\", \"description\": \"CWE-369 Divide By Zero\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-01T14:37:20.225Z\"}}], \"cna\": {\"title\": \"ftrace: Avoid potential division by zero in function_stat_show()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"f0629ee3922f10112584b1898491fecc74d98b3b\", \"lessThan\": \"5b3d32f607f0478b414b16516cf27f9170cf66c8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"ca381f60a3bb7cfaa618d73ca411610bd7fc3149\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"3d738b53ed6cddb68e68c9874520a4bf846163b5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"992775227843c9376773784b8b362add44592ad7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"746cc474a95473591853927b3a9792a2d671155b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"e31f7939c1c27faa5d0e3f14519eaf7c89e8a69d\", \"lessThan\": \"a1a7eb89ca0b89dc1c326eeee2596f263291aca3\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c59e74104cfd7df3ca0b5f59f1baee9c8c28b9ef\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"015f0fd0fcc338513f80044add27fa46cf71d217\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1a2985af2a20b816a5cc41a2ddc1c4109ef6b9c6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7650b4b1df091815bbbbb837d308dd4154684f8a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"010a7e846d4beaf34384c40ff18d5de10106d9b4\", \"versionType\": \"git\"}], \"programFiles\": [\"kernel/trace/ftrace.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.5\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.5\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.291\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.235\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.179\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.130\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.81\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.18\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.13.*\"}, {\"status\": \"unaffected\", \"version\": \"6.14\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"kernel/trace/ftrace.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/5b3d32f607f0478b414b16516cf27f9170cf66c8\"}, {\"url\": \"https://git.kernel.org/stable/c/ca381f60a3bb7cfaa618d73ca411610bd7fc3149\"}, {\"url\": \"https://git.kernel.org/stable/c/3d738b53ed6cddb68e68c9874520a4bf846163b5\"}, {\"url\": \"https://git.kernel.org/stable/c/992775227843c9376773784b8b362add44592ad7\"}, {\"url\": \"https://git.kernel.org/stable/c/f58a3f8e284d0bdf94164a8e61cd4e70d337a1a3\"}, {\"url\": \"https://git.kernel.org/stable/c/746cc474a95473591853927b3a9792a2d671155b\"}, {\"url\": \"https://git.kernel.org/stable/c/9cdac46fa7e854e587eb5f393fe491b6d7a9bdf6\"}, {\"url\": \"https://git.kernel.org/stable/c/a1a7eb89ca0b89dc1c326eeee2596f263291aca3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nftrace: Avoid potential division by zero in function_stat_show()\\n\\nCheck whether denominator expression x * (x - 1) * 1000 mod {2^32, 2^64}\\nproduce zero and skip stddev computation in that case.\\n\\nFor now don\u0027t care about rec-\u003ecounter * rec-\u003ecounter overflow because\\nrec-\u003etime * rec-\u003etime overflow will likely happen earlier.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.291\", \"versionStartIncluding\": \"5.4.9\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.235\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.179\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.130\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.81\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.18\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13.6\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.14\", \"versionStartIncluding\": \"5.5\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.16.83\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.4.209\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.9.209\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.14.163\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.19.94\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T21:08:39.481Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-21898\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T21:08:39.481Z\", \"dateReserved\": \"2024-12-29T08:45:45.783Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-04-01T15:26:50.211Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.