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CVE-2023-53303

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

net: microchip: vcap api: Fix possible memory leak for vcap_dup_rule()

Inject fault When select CONFIG_VCAP_KUNIT_TEST, the below memory leak occurs. If kzalloc() for duprule succeeds, but the following kmemdup() fails, the duprule, ckf and caf memory will be leaked. So kfree them in the error path.

Detalles técnicos trazas, registros y código del informe original
unreferenced object 0xffff122744c50600 (size 192):
  comm "kunit_try_catch", pid 346, jiffies 4294896122 (age 911.812s)
  hex dump (first 32 bytes):
    10 27 00 00 04 00 00 00 1e 00 00 00 2c 01 00 00  .'..........,...
    00 00 00 00 00 00 00 00 18 06 c5 44 27 12 ff ff  ...........D'...
  backtrace:
    [<00000000394b0db8>] __kmem_cache_alloc_node+0x274/0x2f8
    [<0000000001bedc67>] kmalloc_trace+0x38/0x88
    [<00000000b0612f98>] vcap_dup_rule+0x50/0x460
    [<000000005d2d3aca>] vcap_add_rule+0x8cc/0x1038
    [<00000000eef9d0f8>] test_vcap_xn_rule_creator.constprop.0.isra.0+0x238/0x494
    [<00000000cbda607b>] vcap_api_rule_remove_in_front_test+0x1ac/0x698
    [<00000000c8766299>] kunit_try_run_case+0xe0/0x20c
    [<00000000c4fe9186>] kunit_generic_run_threadfn_adapter+0x50/0x94
    [<00000000f6864acf>] kthread+0x2e8/0x374
    [<0000000022e639b3>] ret_from_fork+0x10/0x20

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2023-53303",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-14T18:14:00.750936Z"
        }
      }
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    "cvssMetricV31": [
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "exploitabilityScore": 1.8
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          "product": "Linux",
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              "lessThan": "a26ba60413b2c8f95daf0ee0152cf82abd7bfbe4",
              "versionType": "git"
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              "versionType": "git"
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          ],
          "programFiles": [
            "drivers/net/ethernet/microchip/vcap/vcap_api.c"
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              "version": "0",
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              "versionType": "semver"
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              "version": "6.5.4",
              "versionType": "semver",
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              "lessThanOrEqual": "*"
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          ],
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          ],
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        }
      ]
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  ],
  "published": "2025-09-16T08:15:39.737",
  "references": [
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      "description": [
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          "value": "CWE-401"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: microchip: vcap api: Fix possible memory leak for vcap_dup_rule()\n\nInject fault When select CONFIG_VCAP_KUNIT_TEST, the below memory leak\noccurs. If kzalloc() for duprule succeeds, but the following\nkmemdup() fails, the duprule, ckf and caf memory will be leaked. So kfree\nthem in the error path.\n\nunreferenced object 0xffff122744c50600 (size 192):\n  comm \"kunit_try_catch\", pid 346, jiffies 4294896122 (age 911.812s)\n  hex dump (first 32 bytes):\n    10 27 00 00 04 00 00 00 1e 00 00 00 2c 01 00 00  .'..........,...\n    00 00 00 00 00 00 00 00 18 06 c5 44 27 12 ff ff  ...........D'...\n  backtrace:\n    [<00000000394b0db8>] __kmem_cache_alloc_node+0x274/0x2f8\n    [<0000000001bedc67>] kmalloc_trace+0x38/0x88\n    [<00000000b0612f98>] vcap_dup_rule+0x50/0x460\n    [<000000005d2d3aca>] vcap_add_rule+0x8cc/0x1038\n    [<00000000eef9d0f8>] test_vcap_xn_rule_creator.constprop.0.isra.0+0x238/0x494\n    [<00000000cbda607b>] vcap_api_rule_remove_in_front_test+0x1ac/0x698\n    [<00000000c8766299>] kunit_try_run_case+0xe0/0x20c\n    [<00000000c4fe9186>] kunit_generic_run_threadfn_adapter+0x50/0x94\n    [<00000000f6864acf>] kthread+0x2e8/0x374\n    [<0000000022e639b3>] ret_from_fork+0x10/0x20"
    }
  ],
  "lastModified": "2026-06-17T06:44:47.617",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EAC0AD77-8F42-4E7A-AE44-0710B111E3D4",
              "versionEndExcluding": "6.5.4",
              "versionStartIncluding": "6.3"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.6:rc1:*:*:*:*:*:*",
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          "operator": "OR"
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}