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CVE-2026-80647 (GCVE-0-2026-80647)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-28 06:48
VLAI
Title
RDMA/hns: Fix warning in poll cq direct mode
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix warning in poll cq direct mode CQs allocated by ib_alloc_cq() always have a comp_handler. Though in direct mode this handler is never expected to be called, it is still called when the driver is reset, triggering the following WARN_ONCE(): Call trace: ib_cq_completion_direct+0x38/0x60 hns_roce_cq_completion+0x54/0x90 (hns_roce_hw_v2] hns_roce_handle_device_err+Ox1c8/0x340 [hns_roce_hw_v2] hns_roce_hw_v2_uninit_instance.constprop.0+0x34/0x70 [hns_roce_hw_v2] hns_roce_hw_v2_reset_notify+0xc4/0xe0 [hns_roce_hw_v2] hclge_notify_roce_client+0x60/0xbc [hclge] hclge_reset_rebuild+0x48/0x34c [hclge] hclge_reset_subtask+0xcc/0xec [hclge] hclge_reset_service_task+0x80/0x160 [hclge] hclge_service_task+0x50/0x80 (hclge] process_one_work+0x1cc/0x4d0 worker_thread+0x154/0x414 kthread+0x104/0x144 ret_from_fork+0x10/0x18
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < 95b2e44bc1e5c5d93bb58e178d914dd99a3baa6f (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < e7d363c0ffa836ac1d89657686cad241392c5eb2 (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < c028c1977b6e61eee26bb69332453efb6513f83b (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < a075a7acd155ffdd058e72eb3f4cce1207ebafa1 (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < 9f05319149c14acedb83e2c2842ec4b38992ad9f (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < 16138ea9833d6bb1bed37a3321f282242704bf02 (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < 1e56f8886d64288cf88d80af44c7b9148aeaa98b (git)
Affected: f295e4cece5cb4c60715fed539abcd62468f9ef1 , < 3f19c2a3852e6ba75f3e92dd5edc4e07f3d07f4a (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.5
Unaffected: 0 , < 5.5 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (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)
guessed Create a notification for this product.
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                  "versionStartIncluding": "5.5",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hns: Fix warning in poll cq direct mode\n\nCQs allocated by ib_alloc_cq() always have a comp_handler. Though\nin direct mode this handler is never expected to be called, it\nis still called when the driver is reset, triggering the following\nWARN_ONCE():\n\nCall trace:\nib_cq_completion_direct+0x38/0x60\nhns_roce_cq_completion+0x54/0x90 (hns_roce_hw_v2]\nhns_roce_handle_device_err+Ox1c8/0x340 [hns_roce_hw_v2]\nhns_roce_hw_v2_uninit_instance.constprop.0+0x34/0x70 [hns_roce_hw_v2]\nhns_roce_hw_v2_reset_notify+0xc4/0xe0 [hns_roce_hw_v2]\nhclge_notify_roce_client+0x60/0xbc [hclge]\nhclge_reset_rebuild+0x48/0x34c [hclge]\nhclge_reset_subtask+0xcc/0xec [hclge]\nhclge_reset_service_task+0x80/0x160 [hclge]\nhclge_service_task+0x50/0x80 (hclge]\nprocess_one_work+0x1cc/0x4d0\nworker_thread+0x154/0x414\nkthread+0x104/0x144\nret_from_fork+0x10/0x18"
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      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:48:56.879Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/3f19c2a3852e6ba75f3e92dd5edc4e07f3d07f4a"
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      "title": "RDMA/hns: Fix warning in poll cq direct mode",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80647",
    "datePublished": "2026-08-28T06:48:56.879Z",
    "dateReserved": "2026-08-26T14:34:25.779Z",
    "dateUpdated": "2026-08-28T06:48:56.879Z",
    "state": "PUBLISHED"
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      "date": "2026-09-16",
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Though\\nin direct mode this handler is never expected to be called, it\\nis still called when the driver is reset, triggering the following\\nWARN_ONCE():\\n\\nCall trace:\\nib_cq_completion_direct+0x38/0x60\\nhns_roce_cq_completion+0x54/0x90 (hns_roce_hw_v2]\\nhns_roce_handle_device_err+Ox1c8/0x340 [hns_roce_hw_v2]\\nhns_roce_hw_v2_uninit_instance.constprop.0+0x34/0x70 [hns_roce_hw_v2]\\nhns_roce_hw_v2_reset_notify+0xc4/0xe0 [hns_roce_hw_v2]\\nhclge_notify_roce_client+0x60/0xbc [hclge]\\nhclge_reset_rebuild+0x48/0x34c [hclge]\\nhclge_reset_subtask+0xcc/0xec [hclge]\\nhclge_reset_service_task+0x80/0x160 [hclge]\\nhclge_service_task+0x50/0x80 (hclge]\\nprocess_one_work+0x1cc/0x4d0\\nworker_thread+0x154/0x414\\nkthread+0x104/0x144\\nret_from_fork+0x10/0x18\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/infiniband/hw/hns/hns_roce_main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"95b2e44bc1e5c5d93bb58e178d914dd99a3baa6f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"e7d363c0ffa836ac1d89657686cad241392c5eb2\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"c028c1977b6e61eee26bb69332453efb6513f83b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"a075a7acd155ffdd058e72eb3f4cce1207ebafa1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"9f05319149c14acedb83e2c2842ec4b38992ad9f\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"16138ea9833d6bb1bed37a3321f282242704bf02\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"1e56f8886d64288cf88d80af44c7b9148aeaa98b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"f295e4cece5cb4c60715fed539abcd62468f9ef1\",\"lessThan\":\"3f19c2a3852e6ba75f3e92dd5edc4e07f3d07f4a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/infiniband/hw/hns/hns_roce_main.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.5\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.5\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/16138ea9833d6bb1bed37a3321f282242704bf02\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1e56f8886d64288cf88d80af44c7b9148aeaa98b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3f19c2a3852e6ba75f3e92dd5edc4e07f3d07f4a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/95b2e44bc1e5c5d93bb58e178d914dd99a3baa6f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f05319149c14acedb83e2c2842ec4b38992ad9f\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/a075a7acd155ffdd058e72eb3f4cce1207ebafa1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c028c1977b6e61eee26bb69332453efb6513f83b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e7d363c0ffa836ac1d89657686cad241392c5eb2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T11:15:11+00:00",
      "cve": "CVE-2026-80647",
      "id": "CVE-2026-80647",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/hns: Fix warning in poll cq direct mode",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80647.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-03T16:26:00Z",
      "cve": "CVE-2026-80647",
      "id": "CVE-2026-80647",
      "initial_release_date": "2026-08-28T16:35:16Z",
      "product_status:known_affected": "248",
      "product_status:known_not_affected": "105",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80647",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80647.json",
      "version": "4"
    }
  }
}



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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

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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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