fkie_cve-2023-53110
Vulnerability from fkie_nvd
Published
2025-05-02 16:15
Modified
2025-11-10 17:53
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler() When performing a stress test on SMC-R by rmmod mlx5_ib driver during the wrk/nginx test, we found that there is a probability of triggering a panic while terminating all link groups. This issue dues to the race between smc_smcr_terminate_all() and smc_buf_create(). smc_smcr_terminate_all smc_buf_create /* init */ conn->sndbuf_desc = NULL; ... __smc_lgr_terminate smc_conn_kill smc_close_abort smc_cdc_get_slot_and_msg_send __softirqentry_text_start smc_wr_tx_process_cqe smc_cdc_tx_handler READ(conn->sndbuf_desc->len); /* panic dues to NULL sndbuf_desc */ conn->sndbuf_desc = xxx; This patch tries to fix the issue by always to check the sndbuf_desc before send any cdc msg, to make sure that no null pointer is seen during cqe processing.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22a825c541d775c1dbe7b2402786025acad6727bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31817c530768b0199771ec6019571b4f0ddbf230Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3c270435db8aa34929263dddae8fd050f5216ecbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3ebac7cf0a184a8102821a7a00203f02bebda83cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b108bd9e6be000492ebebe867daa699285978a10Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.3
linux linux_kernel 6.3


To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix NULL sndbuf_desc in smc_cdc_tx_handler()\n\nWhen performing a stress test on SMC-R by rmmod mlx5_ib driver\nduring the wrk/nginx test, we found that there is a probability\nof triggering a panic while terminating all link groups.\n\nThis issue dues to the race between smc_smcr_terminate_all()\nand smc_buf_create().\n\n\t\t\tsmc_smcr_terminate_all\n\nsmc_buf_create\n/* init */\nconn-\u003esndbuf_desc = NULL;\n...\n\n\t\t\t__smc_lgr_terminate\n\t\t\t\tsmc_conn_kill\n\t\t\t\t\tsmc_close_abort\n\t\t\t\t\t\tsmc_cdc_get_slot_and_msg_send\n\n\t\t\t__softirqentry_text_start\n\t\t\t\tsmc_wr_tx_process_cqe\n\t\t\t\t\tsmc_cdc_tx_handler\n\t\t\t\t\t\tREAD(conn-\u003esndbuf_desc-\u003elen);\n\t\t\t\t\t\t/* panic dues to NULL sndbuf_desc */\n\nconn-\u003esndbuf_desc = xxx;\n\nThis patch tries to fix the issue by always to check the sndbuf_desc\nbefore send any cdc msg, to make sure that no null pointer is\nseen during cqe processing."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: correcci\u00f3n de sndbuf_desc NULL en smc_cdc_tx_handler(). Al realizar una prueba de estr\u00e9s en SMC-R con el controlador rmmod mlx5_ib durante la prueba wrk/nginx, se observ\u00f3 la probabilidad de generar un p\u00e1nico al terminar todos los grupos de enlaces. Este problema se debe a la competencia entre smc_smcr_terminate_all() y smc_buf_create(). smc_smcr_terminate_all smc_buf_create /* init */ conn-\u0026gt;sndbuf_desc = NULL; ... __smc_lgr_terminate smc_conn_kill smc_close_abort smc_cdc_get_slot_and_msg_send __softirqentry_text_start smc_wr_tx_process_cqe smc_cdc_tx_handler READ(conn-\u0026gt;sndbuf_desc-\u0026gt;len); /* p\u00e1nico debido a NULL sndbuf_desc */ conn-\u0026gt;sndbuf_desc = xxx; Este parche intenta solucionar el problema verificando siempre sndbuf_desc antes de enviar cualquier mensaje de cdc, para asegurarse de que no se vea ning\u00fan puntero nulo durante el procesamiento de cqe."
    }
  ],
  "id": "CVE-2023-53110",
  "lastModified": "2025-11-10T17:53:47.337",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2025-05-02T16:15:29.930",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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