CVE-2025-21805 (GCVE-0-2025-21805)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:00 – Updated: 2026-05-11 21:06
VLAI
Title
RDMA/rtrs: Add missing deinit() call
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs: Add missing deinit() call A warning is triggered when repeatedly connecting and disconnecting the rnbd: list_add corruption. prev->next should be next (ffff88800b13e480), but was ffff88801ecd1338. (prev=ffff88801ecd1340). WARNING: CPU: 1 PID: 36562 at lib/list_debug.c:32 __list_add_valid_or_report+0x7f/0xa0 Workqueue: ib_cm cm_work_handler [ib_cm] RIP: 0010:__list_add_valid_or_report+0x7f/0xa0 ? __list_add_valid_or_report+0x7f/0xa0 ib_register_event_handler+0x65/0x93 [ib_core] rtrs_srv_ib_dev_init+0x29/0x30 [rtrs_server] rtrs_ib_dev_find_or_add+0x124/0x1d0 [rtrs_core] __alloc_path+0x46c/0x680 [rtrs_server] ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server] ? rcu_is_watching+0xd/0x40 ? __mutex_lock+0x312/0xcf0 ? get_or_create_srv+0xad/0x310 [rtrs_server] ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server] rtrs_rdma_connect+0x23c/0x2d0 [rtrs_server] ? __lock_release+0x1b1/0x2d0 cma_cm_event_handler+0x4a/0x1a0 [rdma_cm] cma_ib_req_handler+0x3a0/0x7e0 [rdma_cm] cm_process_work+0x28/0x1a0 [ib_cm] ? _raw_spin_unlock_irq+0x2f/0x50 cm_req_handler+0x618/0xa60 [ib_cm] cm_work_handler+0x71/0x520 [ib_cm] Commit 667db86bcbe8 ("RDMA/rtrs: Register ib event handler") introduced a new element .deinit but never used it at all. Fix it by invoking the `deinit()` to appropriately unregister the IB event handler.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 667db86bcbe82e789d82c2e8c8c40756ec2e1999 , < 5a79cc9bc961fafe90787f86e8f53ba6fad8d63b (git)
Affected: 667db86bcbe82e789d82c2e8c8c40756ec2e1999 , < 1af2c769032b6b334cd2a867d7d8c7cbbc527b2d (git)
Affected: 667db86bcbe82e789d82c2e8c8c40756ec2e1999 , < 81468c4058a62e84e475433b83b3edc613294f5e (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.13 , ≤ 6.12.* (semver)
Unaffected: 6.13.2 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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{
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs: Add missing deinit() call\n\nA warning is triggered when repeatedly connecting and disconnecting the\nrnbd:\n list_add corruption. prev-\u003enext should be next (ffff88800b13e480), but was ffff88801ecd1338. (prev=ffff88801ecd1340).\n WARNING: CPU: 1 PID: 36562 at lib/list_debug.c:32 __list_add_valid_or_report+0x7f/0xa0\n Workqueue: ib_cm cm_work_handler [ib_cm]\n RIP: 0010:__list_add_valid_or_report+0x7f/0xa0\n  ? __list_add_valid_or_report+0x7f/0xa0\n  ib_register_event_handler+0x65/0x93 [ib_core]\n  rtrs_srv_ib_dev_init+0x29/0x30 [rtrs_server]\n  rtrs_ib_dev_find_or_add+0x124/0x1d0 [rtrs_core]\n  __alloc_path+0x46c/0x680 [rtrs_server]\n  ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server]\n  ? rcu_is_watching+0xd/0x40\n  ? __mutex_lock+0x312/0xcf0\n  ? get_or_create_srv+0xad/0x310 [rtrs_server]\n  ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server]\n  rtrs_rdma_connect+0x23c/0x2d0 [rtrs_server]\n  ? __lock_release+0x1b1/0x2d0\n  cma_cm_event_handler+0x4a/0x1a0 [rdma_cm]\n  cma_ib_req_handler+0x3a0/0x7e0 [rdma_cm]\n  cm_process_work+0x28/0x1a0 [ib_cm]\n  ? _raw_spin_unlock_irq+0x2f/0x50\n  cm_req_handler+0x618/0xa60 [ib_cm]\n  cm_work_handler+0x71/0x520 [ib_cm]\n\nCommit 667db86bcbe8 (\"RDMA/rtrs: Register ib event handler\") introduced a\nnew element .deinit but never used it at all. Fix it by invoking the\n`deinit()` to appropriately unregister the IB event handler."
        }
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        "dateUpdated": "2026-05-11T21:06:52.517Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/81468c4058a62e84e475433b83b3edc613294f5e"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21805",
    "datePublished": "2025-02-27T20:00:58.290Z",
    "dateReserved": "2024-12-29T08:45:45.771Z",
    "dateUpdated": "2026-05-11T21:06:52.517Z",
    "state": "PUBLISHED"
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      "date": "2026-07-14",
      "epss": "0.00178",
      "percentile": "0.07486"
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    "nvd": "{\"cve\":{\"id\":\"CVE-2025-21805\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-27T20:16:03.127\",\"lastModified\":\"2026-06-17T08:44:19.330\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nRDMA/rtrs: Add missing deinit() call\\n\\nA warning is triggered when repeatedly connecting and disconnecting the\\nrnbd:\\n list_add corruption. prev-\u003enext should be next (ffff88800b13e480), but was ffff88801ecd1338. (prev=ffff88801ecd1340).\\n WARNING: CPU: 1 PID: 36562 at lib/list_debug.c:32 __list_add_valid_or_report+0x7f/0xa0\\n Workqueue: ib_cm cm_work_handler [ib_cm]\\n RIP: 0010:__list_add_valid_or_report+0x7f/0xa0\\n  ? __list_add_valid_or_report+0x7f/0xa0\\n  ib_register_event_handler+0x65/0x93 [ib_core]\\n  rtrs_srv_ib_dev_init+0x29/0x30 [rtrs_server]\\n  rtrs_ib_dev_find_or_add+0x124/0x1d0 [rtrs_core]\\n  __alloc_path+0x46c/0x680 [rtrs_server]\\n  ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server]\\n  ? rcu_is_watching+0xd/0x40\\n  ? __mutex_lock+0x312/0xcf0\\n  ? get_or_create_srv+0xad/0x310 [rtrs_server]\\n  ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server]\\n  rtrs_rdma_connect+0x23c/0x2d0 [rtrs_server]\\n  ? __lock_release+0x1b1/0x2d0\\n  cma_cm_event_handler+0x4a/0x1a0 [rdma_cm]\\n  cma_ib_req_handler+0x3a0/0x7e0 [rdma_cm]\\n  cm_process_work+0x28/0x1a0 [ib_cm]\\n  ? _raw_spin_unlock_irq+0x2f/0x50\\n  cm_req_handler+0x618/0xa60 [ib_cm]\\n  cm_work_handler+0x71/0x520 [ib_cm]\\n\\nCommit 667db86bcbe8 (\\\"RDMA/rtrs: Register ib event handler\\\") introduced a\\nnew element .deinit but never used it at all. Fix it by invoking the\\n`deinit()` to appropriately unregister the IB event handler.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: RDMA/rtrs: Agregar llamada deinit() faltante Se activa una advertencia al conectar y desconectar repetidamente rnbd: corrupci\u00f3n de list_add. prev-\u0026gt;next deber\u00eda ser next (ffff88800b13e480), pero era ffff88801ecd1338. (prev=ffff88801ecd1340). ADVERTENCIA: CPU: 1 PID: 36562 at lib/list_debug.c:32 __list_add_valid_or_report+0x7f/0xa0 Workqueue: ib_cm cm_work_handler [ib_cm] RIP: 0010:__list_add_valid_or_report+0x7f/0xa0 ? __list_add_valid_or_report+0x7f/0xa0 ib_register_event_handler+0x65/0x93 [ib_core] rtrs_srv_ib_dev_init+0x29/0x30 [rtrs_server] rtrs_ib_dev_find_or_add+0x124/0x1d0 [rtrs_core] __alloc_path+0x46c/0x680 [rtrs_server] ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server] ? rcu_is_watching+0xd/0x40 ? __mutex_lock+0x312/0xcf0 ? get_or_create_srv+0xad/0x310 [rtrs_server] ? rtrs_rdma_connect+0xa6/0x2d0 [rtrs_server] rtrs_rdma_connect+0x23c/0x2d0 [rtrs_server] ? __lock_release+0x1b1/0x2d0 cma_cm_event_handler+0x4a/0x1a0 [rdma_cm] cma_ib_req_handler+0x3a0/0x7e0 [rdma_cm] cm_process_work+0x28/0x1a0 [ib_cm] ? _raw_spin_unlock_irq+0x2f/0x50 cm_req_handler+0x618/0xa60 [ib_cm] cm_work_handler+0x71/0x520 [ib_cm] Commit 667db86bcbe8 (\\\"RDMA/rtrs: Register ib event handler\\\") introdujo un nuevo elemento .deinit pero nunca lo us\u00f3. Arr\u00e9glelo invocando `deinit()` para anular el registro del controlador de eventos IB de manera adecuada.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/infiniband/ulp/rtrs/rtrs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"667db86bcbe82e789d82c2e8c8c40756ec2e1999\",\"lessThan\":\"5a79cc9bc961fafe90787f86e8f53ba6fad8d63b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"667db86bcbe82e789d82c2e8c8c40756ec2e1999\",\"lessThan\":\"1af2c769032b6b334cd2a867d7d8c7cbbc527b2d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"667db86bcbe82e789d82c2e8c8c40756ec2e1999\",\"lessThan\":\"81468c4058a62e84e475433b83b3edc613294f5e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/infiniband/ulp/rtrs/rtrs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.12\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.12\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.13\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13.2\",\"lessThanOrEqual\":\"6.13.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.14\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12\",\"versionEndExcluding\":\"6.12.13\",\"matchCriteriaId\":\"8507AA00-C52F-4231-94AC-4D0374F5A9F5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.13.2\",\"matchCriteriaId\":\"6D4116B1-1BFD-4F23-BA84-169CC05FC5A3\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1af2c769032b6b334cd2a867d7d8c7cbbc527b2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/5a79cc9bc961fafe90787f86e8f53ba6fad8d63b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/81468c4058a62e84e475433b83b3edc613294f5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:39:59+00:00",
      "cve": "CVE-2025-21805",
      "id": "CVE-2025-21805",
      "initial_release_date": "2025-02-27T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: RDMA/rtrs: Add missing deinit() call",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-21805.json",
      "version": "3"
    }
  }
}



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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.