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EUVD-2026-320469

European Vulnerability Database identifier assigned by ENISA

Reserved

2026-10-02 07:40

Assigner

ENISA

Alias of

a CVE record, shown under related vulnerabilities. This identifier carries no description, severity or references of its own: they belong to that CVE.

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{
  "assigner": "ENISA",
  "date_reserved": "2026-10-02T07:40:44.940177+00:00",
  "id": "EUVD-2026-320469"
}

CVE-2023-53234 (GCVE-0-2023-53234)

Vulnerability from cvelistv5 – Published: 2025-09-15 14:22 – Updated: 2026-05-23 15:28

Title

watchdog: Fix kmemleak in watchdog_cdev_register

Summary

In the Linux kernel, the following vulnerability has been resolved: watchdog: Fix kmemleak in watchdog_cdev_register kmemleak reports memory leaks in watchdog_dev_register, as follows: unreferenced object 0xffff888116233000 (size 2048): comm ""modprobe"", pid 28147, jiffies 4353426116 (age 61.741s) hex dump (first 32 bytes): 80 fa b9 05 81 88 ff ff 08 30 23 16 81 88 ff ff .........0#..... 08 30 23 16 81 88 ff ff 00 00 00 00 00 00 00 00 .0#............. backtrace: [<000000007f001ffd>] __kmem_cache_alloc_node+0x157/0x220 [<000000006a389304>] kmalloc_trace+0x21/0x110 [<000000008d640eea>] watchdog_dev_register+0x4e/0x780 [watchdog] [<0000000053c9f248>] __watchdog_register_device+0x4f0/0x680 [watchdog] [<00000000b2979824>] watchdog_register_device+0xd2/0x110 [watchdog] [<000000001f730178>] 0xffffffffc10880ae [<000000007a1a8bcc>] do_one_initcall+0xcb/0x4d0 [<00000000b98be325>] do_init_module+0x1ca/0x5f0 [<0000000046d08e7c>] load_module+0x6133/0x70f0 ... unreferenced object 0xffff888105b9fa80 (size 16): comm ""modprobe"", pid 28147, jiffies 4353426116 (age 61.741s) hex dump (first 16 bytes): 77 61 74 63 68 64 6f 67 31 00 b9 05 81 88 ff ff watchdog1....... backtrace: [<000000007f001ffd>] __kmem_cache_alloc_node+0x157/0x220 [<00000000486ab89b>] __kmalloc_node_track_caller+0x44/0x1b0 [<000000005a39aab0>] kvasprintf+0xb5/0x140 [<0000000024806f85>] kvasprintf_const+0x55/0x180 [<000000009276cb7f>] kobject_set_name_vargs+0x56/0x150 [<00000000a92e820b>] dev_set_name+0xab/0xe0 [<00000000cec812c6>] watchdog_dev_register+0x285/0x780 [watchdog] [<0000000053c9f248>] __watchdog_register_device+0x4f0/0x680 [watchdog] [<00000000b2979824>] watchdog_register_device+0xd2/0x110 [watchdog] [<000000001f730178>] 0xffffffffc10880ae [<000000007a1a8bcc>] do_one_initcall+0xcb/0x4d0 [<00000000b98be325>] do_init_module+0x1ca/0x5f0 [<0000000046d08e7c>] load_module+0x6133/0x70f0 ... The reason is that put_device is not be called if cdev_device_add fails and wdd->id != 0. watchdog_cdev_register wd_data = kzalloc [1] err = dev_set_name [2] .. err = cdev_device_add if (err) { if (wdd->id == 0) { // wdd->id != 0 .. } return err; // [1],[2] would be leaked To fix it, call put_device in all wdd->id cases.

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 · CISA-ADP (v2.0.3)

Decision recorded 2026-01-14 17:55 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/bf26b0e430ce34261…
https://git.kernel.org/stable/c/8c1655600f4f2839f…
https://git.kernel.org/stable/c/59e391b3fc507a15b…
https://git.kernel.org/stable/c/c5a21a5501508ae3a…
https://git.kernel.org/stable/c/23cc41c3f19c4d858…
https://git.kernel.org/stable/c/ac099d94e0480c937…
https://git.kernel.org/stable/c/50808d034e199fe3f…
https://git.kernel.org/stable/c/13721a2ac66b246f5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 450caf1faa0d7bbbd1da93d3ee8c5edea7bc51a8 , < bf26b0e430ce34261f45959989edaf680b64d538 (git) Affected: f4c36f1999745c2160422fe2f362deadbe3a136b , < 8c1655600f4f2839fb844fe8c70b2b65fadc7a56 (git) Affected: ca7851d46de8a8d69022c4e5feed0820483b5f46 , < 59e391b3fc507a15b7e8e9d9f4de87cae177c366 (git) Affected: 72139dfa2464e43957d330266994740bb7be2535 , < c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3 (git) Affected: 72139dfa2464e43957d330266994740bb7be2535 , < 23cc41c3f19c4d858c3708f1c0a06e94958e6c3b (git) Affected: 72139dfa2464e43957d330266994740bb7be2535 , < ac099d94e0480c937aa9172ab64074981ca1a4d3 (git) Affected: 72139dfa2464e43957d330266994740bb7be2535 , < 50808d034e199fe3ff7a9d2068a4eebeb6b4098a (git) Affected: 72139dfa2464e43957d330266994740bb7be2535 , < 13721a2ac66b246f5802ba1b75ad8637e53eeecc (git) Affected: f76905ce52653e8a821963c35d9013cff19b1399 (git) Affected: 4.14.182 , < 4.14.308 (semver) Affected: 4.19.93 , < 4.19.276 (semver) Affected: 5.4.8 , < 5.4.235 (semver) Affected: 4.9.225 , < 4.10 (semver)
Linux	Linux	Affected: 5.5 Unaffected: 0 , < 5.5 (semver) Unaffected: 4.14.308 , ≤ 4.14.* (semver) Unaffected: 4.19.276 , ≤ 4.19.* (semver) Unaffected: 5.4.235 , ≤ 5.4.* (semver) Unaffected: 5.10.173 , ≤ 5.10.* (semver) Unaffected: 5.15.100 , ≤ 5.15.* (semver) Unaffected: 6.1.18 , ≤ 6.1.* (semver) Unaffected: 6.2.5 , ≤ 6.2.* (semver) Unaffected: 6.3 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "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-2023-53234",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T17:55:57.957947Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-401",
                "description": "CWE-401 Missing Release of Memory after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T18:02:49.667Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/watchdog/watchdog_dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "bf26b0e430ce34261f45959989edaf680b64d538",
              "status": "affected",
              "version": "450caf1faa0d7bbbd1da93d3ee8c5edea7bc51a8",
              "versionType": "git"
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            {
              "lessThan": "8c1655600f4f2839fb844fe8c70b2b65fadc7a56",
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              "versionType": "git"
            },
            {
              "lessThan": "c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3",
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              "versionType": "git"
            },
            {
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              "status": "affected",
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            {
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              "status": "affected",
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            {
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              "status": "affected",
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              "versionType": "semver"
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        },
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          "product": "Linux",
          "programFiles": [
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          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "5.5"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
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            },
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              "status": "unaffected",
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              "status": "unaffected",
              "version": "5.4.235",
              "versionType": "semver"
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              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.100",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.18",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "versionEndExcluding": "4.14.308",
                  "versionStartIncluding": "4.14.182",
                  "vulnerable": true
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                {
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                  "versionStartIncluding": "4.19.93",
                  "vulnerable": true
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                {
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                  "versionStartIncluding": "5.4.8",
                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                },
                {
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                {
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                  "versionEndExcluding": "6.2.5",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
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              ],
              "negate": false,
              "operator": "OR"
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          ]
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: Fix kmemleak in watchdog_cdev_register\n\nkmemleak reports memory leaks in watchdog_dev_register, as follows:\nunreferenced object 0xffff888116233000 (size 2048):\n  comm \"\"modprobe\"\", pid 28147, jiffies 4353426116 (age 61.741s)\n  hex dump (first 32 bytes):\n    80 fa b9 05 81 88 ff ff 08 30 23 16 81 88 ff ff  .........0#.....\n    08 30 23 16 81 88 ff ff 00 00 00 00 00 00 00 00  .0#.............\n  backtrace:\n    [\u003c000000007f001ffd\u003e] __kmem_cache_alloc_node+0x157/0x220\n    [\u003c000000006a389304\u003e] kmalloc_trace+0x21/0x110\n    [\u003c000000008d640eea\u003e] watchdog_dev_register+0x4e/0x780 [watchdog]\n    [\u003c0000000053c9f248\u003e] __watchdog_register_device+0x4f0/0x680 [watchdog]\n    [\u003c00000000b2979824\u003e] watchdog_register_device+0xd2/0x110 [watchdog]\n    [\u003c000000001f730178\u003e] 0xffffffffc10880ae\n    [\u003c000000007a1a8bcc\u003e] do_one_initcall+0xcb/0x4d0\n    [\u003c00000000b98be325\u003e] do_init_module+0x1ca/0x5f0\n    [\u003c0000000046d08e7c\u003e] load_module+0x6133/0x70f0\n    ...\n\nunreferenced object 0xffff888105b9fa80 (size 16):\n  comm \"\"modprobe\"\", pid 28147, jiffies 4353426116 (age 61.741s)\n  hex dump (first 16 bytes):\n    77 61 74 63 68 64 6f 67 31 00 b9 05 81 88 ff ff  watchdog1.......\n  backtrace:\n    [\u003c000000007f001ffd\u003e] __kmem_cache_alloc_node+0x157/0x220\n    [\u003c00000000486ab89b\u003e] __kmalloc_node_track_caller+0x44/0x1b0\n    [\u003c000000005a39aab0\u003e] kvasprintf+0xb5/0x140\n    [\u003c0000000024806f85\u003e] kvasprintf_const+0x55/0x180\n    [\u003c000000009276cb7f\u003e] kobject_set_name_vargs+0x56/0x150\n    [\u003c00000000a92e820b\u003e] dev_set_name+0xab/0xe0\n    [\u003c00000000cec812c6\u003e] watchdog_dev_register+0x285/0x780 [watchdog]\n    [\u003c0000000053c9f248\u003e] __watchdog_register_device+0x4f0/0x680 [watchdog]\n    [\u003c00000000b2979824\u003e] watchdog_register_device+0xd2/0x110 [watchdog]\n    [\u003c000000001f730178\u003e] 0xffffffffc10880ae\n    [\u003c000000007a1a8bcc\u003e] do_one_initcall+0xcb/0x4d0\n    [\u003c00000000b98be325\u003e] do_init_module+0x1ca/0x5f0\n    [\u003c0000000046d08e7c\u003e] load_module+0x6133/0x70f0\n    ...\n\nThe reason is that put_device is not be called if cdev_device_add fails\nand wdd-\u003eid != 0.\n\nwatchdog_cdev_register\n  wd_data = kzalloc                             [1]\n  err = dev_set_name                            [2]\n  ..\n  err = cdev_device_add\n  if (err) {\n    if (wdd-\u003eid == 0) {  // wdd-\u003eid != 0\n      ..\n    }\n    return err;  // [1],[2] would be leaked\n\nTo fix it, call put_device in all wdd-\u003eid cases."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:28:21.133Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/bf26b0e430ce34261f45959989edaf680b64d538"
        },
        {
          "url": "https://git.kernel.org/stable/c/8c1655600f4f2839fb844fe8c70b2b65fadc7a56"
        },
        {
          "url": "https://git.kernel.org/stable/c/59e391b3fc507a15b7e8e9d9f4de87cae177c366"
        },
        {
          "url": "https://git.kernel.org/stable/c/c5a21a5501508ae3afa2fe6d5a3e74a37fa48df3"
        },
        {
          "url": "https://git.kernel.org/stable/c/23cc41c3f19c4d858c3708f1c0a06e94958e6c3b"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac099d94e0480c937aa9172ab64074981ca1a4d3"
        },
        {
          "url": "https://git.kernel.org/stable/c/50808d034e199fe3ff7a9d2068a4eebeb6b4098a"
        },
        {
          "url": "https://git.kernel.org/stable/c/13721a2ac66b246f5802ba1b75ad8637e53eeecc"
        }
      ],
      "title": "watchdog: Fix kmemleak in watchdog_cdev_register",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53234",
    "datePublished": "2025-09-15T14:22:07.219Z",
    "dateReserved": "2025-09-15T14:19:21.847Z",
    "dateUpdated": "2026-05-23T15:28:21.133Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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EUVD-2026-320469

CVE-2023-53234 (GCVE-0-2023-53234)

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Sightings

Nomenclature

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