CVE-2025-40089 (GCVE-0-2025-40089)
Vulnerability from cvelistv5
Published
2025-10-30 09:47
Modified
2025-10-30 09:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: cxl/features: Add check for no entries in cxl_feature_info cxl EDAC calls cxl_feature_info() to get the feature information and if the hardware has no Features support, cxlfs may be passed in as NULL. [ 51.957498] BUG: kernel NULL pointer dereference, address: 0000000000000008 [ 51.965571] #PF: supervisor read access in kernel mode [ 51.971559] #PF: error_code(0x0000) - not-present page [ 51.977542] PGD 17e4f6067 P4D 0 [ 51.981384] Oops: Oops: 0000 [#1] SMP NOPTI [ 51.986300] CPU: 49 UID: 0 PID: 3782 Comm: systemd-udevd Not tainted 6.17.0dj test+ #64 PREEMPT(voluntary) [ 51.997355] Hardware name: <removed> [ 52.009790] RIP: 0010:cxl_feature_info+0xa/0x80 [cxl_core] Add a check for cxlfs before dereferencing it and return -EOPNOTSUPP if there is no cxlfs created due to no hardware support.
References
Impacted products
Vendor Product Version
Linux Linux Version: eb5dfcb9e36d0e46089fec777d911313c1876fa3
Version: eb5dfcb9e36d0e46089fec777d911313c1876fa3
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/features.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b8a69e3b1a460bf5d96dd53cbd121aa2cd346886",
              "status": "affected",
              "version": "eb5dfcb9e36d0e46089fec777d911313c1876fa3",
              "versionType": "git"
            },
            {
              "lessThan": "a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e",
              "status": "affected",
              "version": "eb5dfcb9e36d0e46089fec777d911313c1876fa3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/features.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "lessThan": "6.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.5",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18-rc2",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/features: Add check for no entries in cxl_feature_info\n\ncxl EDAC calls cxl_feature_info() to get the feature information and\nif the hardware has no Features support, cxlfs may be passed in as\nNULL.\n\n[   51.957498] BUG: kernel NULL pointer dereference, address: 0000000000000008\n[   51.965571] #PF: supervisor read access in kernel mode\n[   51.971559] #PF: error_code(0x0000) - not-present page\n[   51.977542] PGD 17e4f6067 P4D 0\n[   51.981384] Oops: Oops: 0000 [#1] SMP NOPTI\n[   51.986300] CPU: 49 UID: 0 PID: 3782 Comm: systemd-udevd Not tainted 6.17.0dj\ntest+ #64 PREEMPT(voluntary)\n[   51.997355] Hardware name: \u003cremoved\u003e\n[   52.009790] RIP: 0010:cxl_feature_info+0xa/0x80 [cxl_core]\n\nAdd a check for cxlfs before dereferencing it and return -EOPNOTSUPP if\nthere is no cxlfs created due to no hardware support."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-30T09:47:57.990Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b8a69e3b1a460bf5d96dd53cbd121aa2cd346886"
        },
        {
          "url": "https://git.kernel.org/stable/c/a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e"
        }
      ],
      "title": "cxl/features: Add check for no entries in cxl_feature_info",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40089",
    "datePublished": "2025-10-30T09:47:57.990Z",
    "dateReserved": "2025-04-16T07:20:57.162Z",
    "dateUpdated": "2025-10-30T09:47:57.990Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40089\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-30T10:15:33.447\",\"lastModified\":\"2025-10-30T15:03:13.440\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncxl/features: Add check for no entries in cxl_feature_info\\n\\ncxl EDAC calls cxl_feature_info() to get the feature information and\\nif the hardware has no Features support, cxlfs may be passed in as\\nNULL.\\n\\n[   51.957498] BUG: kernel NULL pointer dereference, address: 0000000000000008\\n[   51.965571] #PF: supervisor read access in kernel mode\\n[   51.971559] #PF: error_code(0x0000) - not-present page\\n[   51.977542] PGD 17e4f6067 P4D 0\\n[   51.981384] Oops: Oops: 0000 [#1] SMP NOPTI\\n[   51.986300] CPU: 49 UID: 0 PID: 3782 Comm: systemd-udevd Not tainted 6.17.0dj\\ntest+ #64 PREEMPT(voluntary)\\n[   51.997355] Hardware name: \u003cremoved\u003e\\n[   52.009790] RIP: 0010:cxl_feature_info+0xa/0x80 [cxl_core]\\n\\nAdd a check for cxlfs before dereferencing it and return -EOPNOTSUPP if\\nthere is no cxlfs created due to no hardware support.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b8a69e3b1a460bf5d96dd53cbd121aa2cd346886\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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