CVE-2026-74389 (GCVE-0-2026-74389)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:59 – Updated: 2026-08-17 05:18
VLAI
Title
RDMA/hns: Fix log flood after cmd_mbox failure
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix log flood after cmd_mbox failure hns_roce_cmd_mbox() is the command interface between driver and hardware. When hardware is abnormal, the unlimited error printings after hns_roce_cmd_mbox() failure will cause log flood and even system crash. Replace ibdev_err() and ibdev_warn() with their ratelimited versions in the error handling path after hns_roce_cmd_mbox() (and its wrappers hns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9a4435375cd151e07c0c38fa601b00115986091b , < 7d9fbee252f84de3e6947a40eec01481c9d8afbb (git)
Affected: 9a4435375cd151e07c0c38fa601b00115986091b , < 66f44ec974ab372e4e1ee9eac4245237c94e8f68 (git)
Affected: 9a4435375cd151e07c0c38fa601b00115986091b , < f3c9e84268e9fa613d40d6c138fb6969c35879b5 (git)
Affected: 9a4435375cd151e07c0c38fa601b00115986091b , < bbd97d71e53e551890e4115ad9de46b5f2ac0858 (git)
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Linux Linux Affected: 4.9
Unaffected: 0 , < 4.9 (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/hns/hns_roce_cq.c",
            "drivers/infiniband/hw/hns/hns_roce_hw_v2.c",
            "drivers/infiniband/hw/hns/hns_roce_mr.c",
            "drivers/infiniband/hw/hns/hns_roce_srq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "9a4435375cd151e07c0c38fa601b00115986091b",
              "versionType": "git"
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              "status": "affected",
              "version": "9a4435375cd151e07c0c38fa601b00115986091b",
              "versionType": "git"
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          "programFiles": [
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            "drivers/infiniband/hw/hns/hns_roce_hw_v2.c",
            "drivers/infiniband/hw/hns/hns_roce_mr.c",
            "drivers/infiniband/hw/hns/hns_roce_srq.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "semver"
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              "versionType": "semver"
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      "cpeApplicability": [
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix log flood after cmd_mbox failure\n\nhns_roce_cmd_mbox() is the command interface between driver and\nhardware. When hardware is abnormal, the unlimited error printings\nafter hns_roce_cmd_mbox() failure will cause log flood and even\nsystem crash.\n\nReplace ibdev_err() and ibdev_warn() with their ratelimited versions\nin the error handling path after hns_roce_cmd_mbox() (and its wrappers\nhns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:18:27.843Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
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        },
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    "cveId": "CVE-2026-74389",
    "datePublished": "2026-08-15T05:59:03.786Z",
    "dateReserved": "2026-08-15T05:44:03.891Z",
    "dateUpdated": "2026-08-17T05:18:27.843Z",
    "state": "PUBLISHED"
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      "id": "msrc_CVE-2026-74389",
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      "product_status:known_not_affected": "1",
      "source": "Microsoft CSAF VEX",
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    "nvd": {
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                "product": "Linux",
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                  "drivers/infiniband/hw/hns/hns_roce_cq.c",
                  "drivers/infiniband/hw/hns/hns_roce_hw_v2.c",
                  "drivers/infiniband/hw/hns/hns_roce_mr.c",
                  "drivers/infiniband/hw/hns/hns_roce_srq.c"
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix log flood after cmd_mbox failure\n\nhns_roce_cmd_mbox() is the command interface between driver and\nhardware. When hardware is abnormal, the unlimited error printings\nafter hns_roce_cmd_mbox() failure will cause log flood and even\nsystem crash.\n\nReplace ibdev_err() and ibdev_warn() with their ratelimited versions\nin the error handling path after hns_roce_cmd_mbox() (and its wrappers\nhns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails."
          }
        ],
        "id": "CVE-2026-74389",
        "lastModified": "2026-08-17T06:19:33.950",
        "metrics": {},
        "published": "2026-08-15T06:22:40.847",
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      "version": "3"
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      "current_release_date": "2026-09-02T11:44:26Z",
      "cve": "CVE-2026-74389",
      "id": "CVE-2026-74389",
      "initial_release_date": "2026-09-02T11:44:26Z",
      "product_status:known_affected": "304",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-74389",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-74389.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


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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.