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CVE-2025-40089 (GCVE-0-2025-40089)

Vulnerability from cvelistv5 – Published: 2025-10-30 09:47 – Updated: 2026-05-11 21:42
VLAI
Title
cxl/features: Add check for no entries in cxl_feature_info
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: eb5dfcb9e36d0e46089fec777d911313c1876fa3 , < b8a69e3b1a460bf5d96dd53cbd121aa2cd346886 (git)
Affected: eb5dfcb9e36d0e46089fec777d911313c1876fa3 , < a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.17.5 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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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": [
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              "status": "affected",
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              "versionType": "git"
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            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "versionStartIncluding": "6.15",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.18",
                  "versionStartIncluding": "6.15",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      ],
      "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": "2026-05-11T21:42:18.011Z",
        "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"
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  },
  "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": "2026-05-11T21:42:18.011Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-40089",
      "date": "2026-09-16",
      "epss": "0.00172",
      "percentile": "0.06893"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40089\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-10-30T10:15:33.447\",\"lastModified\":\"2026-06-17T09:21:14.753\",\"vulnStatus\":\"Deferred\",\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/cxl/core/features.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"eb5dfcb9e36d0e46089fec777d911313c1876fa3\",\"lessThan\":\"b8a69e3b1a460bf5d96dd53cbd121aa2cd346886\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb5dfcb9e36d0e46089fec777d911313c1876fa3\",\"lessThan\":\"a375246fcf2bbdaeb1df7fa7ee5a8b884a89085e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/cxl/core/features.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.15\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.15\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.17.5\",\"lessThanOrEqual\":\"6.17.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:22:44+00:00",
      "cve": "CVE-2025-40089",
      "id": "CVE-2025-40089",
      "initial_release_date": "2025-10-30T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: cxl/features: Add check for no entries in cxl_feature_info",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40089.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:13:15Z",
      "cve": "CVE-2025-40089",
      "id": "CVE-2025-40089",
      "initial_release_date": "2025-10-31T00:25:17Z",
      "product_status:known_not_affected": "514",
      "product_status:recommended": "6",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-40089",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-40089.json",
      "version": "9"
    }
  }
}



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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.


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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.