CVE-2025-37987 (GCVE-0-2025-37987)
Vulnerability from cvelistv5
Published
2025-05-20 17:09
Modified
2025-06-04 12:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: pds_core: Prevent possible adminq overflow/stuck condition The pds_core's adminq is protected by the adminq_lock, which prevents more than 1 command to be posted onto it at any one time. This makes it so the client drivers cannot simultaneously post adminq commands. However, the completions happen in a different context, which means multiple adminq commands can be posted sequentially and all waiting on completion. On the FW side, the backing adminq request queue is only 16 entries long and the retry mechanism and/or overflow/stuck prevention is lacking. This can cause the adminq to get stuck, so commands are no longer processed and completions are no longer sent by the FW. As an initial fix, prevent more than 16 outstanding adminq commands so there's no way to cause the adminq from getting stuck. This works because the backing adminq request queue will never have more than 16 pending adminq commands, so it will never overflow. This is done by reducing the adminq depth to 16.
References
Impacted products
Vendor Product Version
Linux Linux Version: 45d76f492938cdc27ddadc16e1e75103f4cfbf56
Version: 45d76f492938cdc27ddadc16e1e75103f4cfbf56
Version: 45d76f492938cdc27ddadc16e1e75103f4cfbf56
Version: 45d76f492938cdc27ddadc16e1e75103f4cfbf56
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amd/pds_core/core.c",
            "drivers/net/ethernet/amd/pds_core/core.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amd/pds_core/core.c",
            "drivers/net/ethernet/amd/pds_core/core.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
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              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.26",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.93",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.26",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npds_core: Prevent possible adminq overflow/stuck condition\n\nThe pds_core\u0027s adminq is protected by the adminq_lock, which prevents\nmore than 1 command to be posted onto it at any one time. This makes it\nso the client drivers cannot simultaneously post adminq commands.\nHowever, the completions happen in a different context, which means\nmultiple adminq commands can be posted sequentially and all waiting\non completion.\n\nOn the FW side, the backing adminq request queue is only 16 entries\nlong and the retry mechanism and/or overflow/stuck prevention is\nlacking. This can cause the adminq to get stuck, so commands are no\nlonger processed and completions are no longer sent by the FW.\n\nAs an initial fix, prevent more than 16 outstanding adminq commands so\nthere\u0027s no way to cause the adminq from getting stuck. This works\nbecause the backing adminq request queue will never have more than 16\npending adminq commands, so it will never overflow. This is done by\nreducing the adminq depth to 16."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-04T12:57:38.445Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/517f928cc0c133472618cbba18382b46f5f71ba3"
        },
        {
          "url": "https://git.kernel.org/stable/c/2982e07ad72b48eb12c29a87a3f2126ea552688c"
        },
        {
          "url": "https://git.kernel.org/stable/c/5e3dc65675faad846420d24762e4faadc12d9392"
        },
        {
          "url": "https://git.kernel.org/stable/c/d9e2f070d8af60f2c8c02b2ddf0a9e90b4e9220c"
        }
      ],
      "title": "pds_core: Prevent possible adminq overflow/stuck condition",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37987",
    "datePublished": "2025-05-20T17:09:20.166Z",
    "dateReserved": "2025-04-16T04:51:23.976Z",
    "dateUpdated": "2025-06-04T12:57:38.445Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37987\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-20T18:15:45.567\",\"lastModified\":\"2025-06-04T13:15:27.810\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npds_core: Prevent possible adminq overflow/stuck condition\\n\\nThe pds_core\u0027s adminq is protected by the adminq_lock, which prevents\\nmore than 1 command to be posted onto it at any one time. This makes it\\nso the client drivers cannot simultaneously post adminq commands.\\nHowever, the completions happen in a different context, which means\\nmultiple adminq commands can be posted sequentially and all waiting\\non completion.\\n\\nOn the FW side, the backing adminq request queue is only 16 entries\\nlong and the retry mechanism and/or overflow/stuck prevention is\\nlacking. This can cause the adminq to get stuck, so commands are no\\nlonger processed and completions are no longer sent by the FW.\\n\\nAs an initial fix, prevent more than 16 outstanding adminq commands so\\nthere\u0027s no way to cause the adminq from getting stuck. This works\\nbecause the backing adminq request queue will never have more than 16\\npending adminq commands, so it will never overflow. This is done by\\nreducing the adminq depth to 16.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pds_core: Prevenir posible condici\u00f3n de desbordamiento/atascamiento de adminq El adminq de pds_core est\u00e1 protegido por adminq_lock, que impide que se le env\u00ede m\u00e1s de 1 comando a la vez. Esto hace que los controladores del cliente no puedan enviar comandos adminq simult\u00e1neamente. Sin embargo, las finalizaciones ocurren en un contexto diferente, lo que significa que se pueden enviar m\u00faltiples comandos adminq secuencialmente y todos esperando a ser completados. En el lado del FW, la cola de solicitudes adminq de respaldo solo tiene 16 entradas y falta el mecanismo de reintento o la prevenci\u00f3n de desbordamiento/atascamiento. Esto puede provocar que adminq se atasque, por lo que el FW ya no procesa los comandos y ya no env\u00eda las finalizaciones. Como soluci\u00f3n inicial, evite que haya m\u00e1s de 16 comandos adminq pendientes para que no haya forma de provocar que adminq se atasque. Esto funciona porque la cola de solicitudes adminq de respaldo nunca tendr\u00e1 m\u00e1s de 16 comandos adminq pendientes, por lo que nunca se desbordar\u00e1. Esto se hace reduciendo la profundidad de adminq a 16.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2982e07ad72b48eb12c29a87a3f2126ea552688c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/517f928cc0c133472618cbba18382b46f5f71ba3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5e3dc65675faad846420d24762e4faadc12d9392\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d9e2f070d8af60f2c8c02b2ddf0a9e90b4e9220c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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