GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2025-21687 (GCVE-0-2025-21687)

Vulnerability from cvelistv5 – Published: 2025-02-10 15:58 – Updated: 2026-08-05 11:53
VLAI
Title
vfio/platform: check the bounds of read/write syscalls
Summary
In the Linux kernel, the following vulnerability has been resolved: vfio/platform: check the bounds of read/write syscalls count and offset are passed from user space and not checked, only offset is capped to 40 bits, which can be used to read/write out of bounds of the device.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < f21636f24b6786c8b13f1af4319fa75ffcf17f38 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < 9377cdc118cf327248f1a9dde7b87de067681dc9 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < d19a8650fd3d7aed8d1af1d9a77f979a8430eba1 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < ed81d82bb6e9df3a137f2c343ed689e6c68268ef (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < 92340e6c5122d823ad064984ef7513eba9204048 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < f65ce06387f8c1fb54bd59e18a8428248ec68eaf (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < 6bcb8a5b70b80143db9bf12dfa7d53636f824d53 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < 1485932496a1b025235af8aa1e21988d6b7ccd54 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < c981c32c38af80737a2fedc16e270546d139ccdd (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < a20fcaa230f7472456d12cf761ed13938e320ac3 (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < 665cfd1083866f87301bbd232cb8ba48dcf4acce (git)
Affected: 6e3f264560099869f68830cb14b3b3e71e5ac76a , < ce9ff21ea89d191e477a02ad7eabf4f996b80a69 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.1
Unaffected: 0 , < 4.1 (semver)
Unaffected: 5.4.290 , ≤ 5.4.* (semver)
Unaffected: 5.4.291 , ≤ 5.4.* (semver)
Unaffected: 5.10.234 , ≤ 5.10.* (semver)
Unaffected: 5.10.235 , ≤ 5.10.* (semver)
Unaffected: 5.15.178 , ≤ 5.15.* (semver)
Unaffected: 5.15.179 , ≤ 5.15.* (semver)
Unaffected: 6.1.128 , ≤ 6.1.* (semver)
Unaffected: 6.1.129 , ≤ 6.1.* (semver)
Unaffected: 6.6.75 , ≤ 6.6.* (semver)
Unaffected: 6.12.12 , ≤ 6.12.* (semver)
Unaffected: 6.13.1 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:59:05.163Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vfio/platform/vfio_platform_common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f21636f24b6786c8b13f1af4319fa75ffcf17f38",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "9377cdc118cf327248f1a9dde7b87de067681dc9",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "d19a8650fd3d7aed8d1af1d9a77f979a8430eba1",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "ed81d82bb6e9df3a137f2c343ed689e6c68268ef",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "92340e6c5122d823ad064984ef7513eba9204048",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "f65ce06387f8c1fb54bd59e18a8428248ec68eaf",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "6bcb8a5b70b80143db9bf12dfa7d53636f824d53",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "1485932496a1b025235af8aa1e21988d6b7ccd54",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "c981c32c38af80737a2fedc16e270546d139ccdd",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "a20fcaa230f7472456d12cf761ed13938e320ac3",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "665cfd1083866f87301bbd232cb8ba48dcf4acce",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            },
            {
              "lessThan": "ce9ff21ea89d191e477a02ad7eabf4f996b80a69",
              "status": "affected",
              "version": "6e3f264560099869f68830cb14b3b3e71e5ac76a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/vfio/platform/vfio_platform_common.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.1"
            },
            {
              "lessThan": "4.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.290",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.291",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.234",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.235",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.179",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.128",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.129",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.75",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.1",
              "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": "5.4.290",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.291",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.234",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.235",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.178",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.179",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.128",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.129",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.75",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.12",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.1",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.14",
                  "versionStartIncluding": "4.1",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio/platform: check the bounds of read/write syscalls\n\ncount and offset are passed from user space and not checked, only\noffset is capped to 40 bits, which can be used to read/write out of\nbounds of the device."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered via read()/write()/pread()/pwrite() syscalls on a VFIO device file descriptor (/dev/vfio/\u003cgroup\u003e or /dev/vfio/devices/vfioN), requiring local access to the system. There is no network-facing path to vfio_platform_read/write.\nAC:L - The attacker directly and deterministically controls both the file offset (40 bits, unchecked against reg-\u003esize) and the byte count, so a single pwrite()/pread() reliably performs an out-of-bounds MMIO access at any chosen offset with no race, timing, or uncontrolled precondition.\nPR:L - Only an open fd on the VFIO device is needed; the IOMMU-backed VFIO path enforces no capability check (CAP_SYS_RAWIO is required only for the no-iommu mode), and VFIO is expressly designed to grant unprivileged users device access via file permissions. Handing the device node to a non-root user (QEMU, userspace drivers) is the normal deployment.\nUI:N - The attacker performs the entire attack by issuing syscalls on a descriptor it opens itself; no victim action, configuration change, or interaction with another user is required.\nS:U - The vulnerable component and the impacted component are both the Linux kernel \u2014 the out-of-bounds accesses land in kernel virtual address space managed by the same security authority. This is standard local kernel compromise, not a guest-to-host or IOMMU-crossing escape.\nC:H - ioread8/16/32 at an attacker-chosen offset up to 1 TiB past the ioremapped device window, with the value copied directly to userspace via copy_to_user, yields arbitrary kernel memory disclosure across the entire vmalloc/ioremap range (kernel stacks, vmalloc\u0027d structures, other devices\u0027 MMIO).\nI:H - iowrite8/16/32 writes fully attacker-controlled data at an attacker-chosen kernel virtual address in the same 1 TiB window, giving an arbitrary kernel write that can corrupt VMAP_STACK kernel stacks, BPF JIT pages, and other drivers\u0027 registers (including SMMU control registers) \u2014 a direct path to code execution and privilege escalation.\nA:H - Accessing an unmapped virtual address in the out-of-bounds window causes a kernel data abort/oops or panic, and writes into unrelated devices\u0027 MMIO registers can wedge or hang the machine; this is trivially and repeatedly triggerable."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:53:37.668Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f21636f24b6786c8b13f1af4319fa75ffcf17f38"
        },
        {
          "url": "https://git.kernel.org/stable/c/9377cdc118cf327248f1a9dde7b87de067681dc9"
        },
        {
          "url": "https://git.kernel.org/stable/c/d19a8650fd3d7aed8d1af1d9a77f979a8430eba1"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed81d82bb6e9df3a137f2c343ed689e6c68268ef"
        },
        {
          "url": "https://git.kernel.org/stable/c/92340e6c5122d823ad064984ef7513eba9204048"
        },
        {
          "url": "https://git.kernel.org/stable/c/f65ce06387f8c1fb54bd59e18a8428248ec68eaf"
        },
        {
          "url": "https://git.kernel.org/stable/c/6bcb8a5b70b80143db9bf12dfa7d53636f824d53"
        },
        {
          "url": "https://git.kernel.org/stable/c/1485932496a1b025235af8aa1e21988d6b7ccd54"
        },
        {
          "url": "https://git.kernel.org/stable/c/c981c32c38af80737a2fedc16e270546d139ccdd"
        },
        {
          "url": "https://git.kernel.org/stable/c/a20fcaa230f7472456d12cf761ed13938e320ac3"
        },
        {
          "url": "https://git.kernel.org/stable/c/665cfd1083866f87301bbd232cb8ba48dcf4acce"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce9ff21ea89d191e477a02ad7eabf4f996b80a69"
        }
      ],
      "title": "vfio/platform: check the bounds of read/write syscalls",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21687",
    "datePublished": "2025-02-10T15:58:43.944Z",
    "dateReserved": "2024-12-29T08:45:45.741Z",
    "dateUpdated": "2026-08-05T11:53:37.668Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-21687",
      "date": "2026-09-17",
      "epss": "0.00233",
      "percentile": "0.14422"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-19T01:23:51.000Z",
      "cve": "CVE-2025-21687",
      "id": "msrc_CVE-2025-21687",
      "initial_release_date": "2025-02-02T00:00:00.000Z",
      "product_status:known_not_affected": "3",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "vfio/platform: check the bounds of read/write syscalls",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-21687.json",
      "version": "3"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21687\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-10T16:15:38.207\",\"lastModified\":\"2026-07-30T06:19:12.340\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvfio/platform: check the bounds of read/write syscalls\\n\\ncount and offset are passed from user space and not checked, only\\noffset is capped to 40 bits, which can be used to read/write out of\\nbounds of the device.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vfio/platform: comprueba que los l\u00edmites de las llamadas al sistema de lectura/escritura count y offset se pasan desde el espacio del usuario y no se comprueban, solo offset est\u00e1 limitado a 40 bits, que se pueden usar para leer/escribir fuera de los l\u00edmites del dispositivo.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/vfio/platform/vfio_platform_common.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"f21636f24b6786c8b13f1af4319fa75ffcf17f38\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"9377cdc118cf327248f1a9dde7b87de067681dc9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"d19a8650fd3d7aed8d1af1d9a77f979a8430eba1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"ed81d82bb6e9df3a137f2c343ed689e6c68268ef\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"92340e6c5122d823ad064984ef7513eba9204048\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"f65ce06387f8c1fb54bd59e18a8428248ec68eaf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"6bcb8a5b70b80143db9bf12dfa7d53636f824d53\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"1485932496a1b025235af8aa1e21988d6b7ccd54\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"c981c32c38af80737a2fedc16e270546d139ccdd\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"a20fcaa230f7472456d12cf761ed13938e320ac3\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"665cfd1083866f87301bbd232cb8ba48dcf4acce\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6e3f264560099869f68830cb14b3b3e71e5ac76a\",\"lessThan\":\"ce9ff21ea89d191e477a02ad7eabf4f996b80a69\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/vfio/platform/vfio_platform_common.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.1\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.1\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.290\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.291\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.234\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.235\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.178\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.179\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.128\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.129\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.75\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.12\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13.1\",\"lessThanOrEqual\":\"6.13.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-125\"},{\"lang\":\"en\",\"value\":\"CWE-787\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.1\",\"versionEndExcluding\":\"5.4.290\",\"matchCriteriaId\":\"53A35BB5-DF05-43C3-A537-BA31468D0C20\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.234\",\"matchCriteriaId\":\"F732162B-ED7E-4367-A5C2-B24FD9B0D33B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.178\",\"matchCriteriaId\":\"171159A1-9827-4C7B-821D-55398B837C49\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.128\",\"matchCriteriaId\":\"EDB5047C-0330-407A-BE1B-513B5BF304DE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.75\",\"matchCriteriaId\":\"E8D39B53-7390-48BE-92FD-8846BE8E8430\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.12\",\"matchCriteriaId\":\"B04C243A-753B-49A9-87C7-92FCC1425FB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A3F9505-6B98-4269-8B81-127E55A1BF00\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"62567B3C-6CEE-46D0-BC2E-B3717FBF7D13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5A073481-106D-4B15-B4C7-FB0213B8E1D4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE491969-75AE-4A6B-9A58-8FC5AF98798F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"93C0660D-7FB8-4FBA-892A-B064BA71E49E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"034C36A6-C481-41F3-AE9A-D116E5BE6895\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"8AF9DC49-2085-4FFB-A7E3-73DFAFECC7F2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.13:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"5DFCDFB8-4FD0-465A-9076-D813D78FE51B\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1485932496a1b025235af8aa1e21988d6b7ccd54\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/665cfd1083866f87301bbd232cb8ba48dcf4acce\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/6bcb8a5b70b80143db9bf12dfa7d53636f824d53\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/92340e6c5122d823ad064984ef7513eba9204048\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9377cdc118cf327248f1a9dde7b87de067681dc9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a20fcaa230f7472456d12cf761ed13938e320ac3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/c981c32c38af80737a2fedc16e270546d139ccdd\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ce9ff21ea89d191e477a02ad7eabf4f996b80a69\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d19a8650fd3d7aed8d1af1d9a77f979a8430eba1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ed81d82bb6e9df3a137f2c343ed689e6c68268ef\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f21636f24b6786c8b13f1af4319fa75ffcf17f38\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f65ce06387f8c1fb54bd59e18a8428248ec68eaf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T09:41:18+00:00",
      "cve": "CVE-2025-21687",
      "id": "CVE-2025-21687",
      "initial_release_date": "2025-02-10T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: vfio/platform: check the bounds of read/write syscalls",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21687.json",
      "version": "3"
    }
  }
}



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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.