Vulnerability-Lookup

CVE-2026-89970 (GCVE-0-2026-89970)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-09-16 14:40

Title

nvmet-auth: Synchronize timeout work during SQ teardown

Summary

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: Synchronize timeout work during SQ teardown nvmet_auth_sq_free() cancels auth_expired_work with cancel_delayed_work(). If the work has already started, cancellation does not wait for the callback. Transport teardown can consequently free or reuse the queue containing struct nvmet_sq while nvmet_auth_expired_work() still accesses that SQ. Add a teardown-specific helper that synchronously drains the delayed work before freeing authentication state, and use it from nvmet_sq_destroy(). Keep the non-synchronous helper for in-band authentication state cleanup, where the SQ owner remains alive.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/664022fa1c93f4eba…
https://git.kernel.org/stable/c/c3c126a6142a1335b…
https://git.kernel.org/stable/c/c17c87bde6d6f5252…
https://git.kernel.org/stable/c/7555ddd60af72df28…
https://git.kernel.org/stable/c/eb4f9127a2b8a1527…
https://git.kernel.org/stable/c/eaa948c0e19b1bb2d…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 1a70200f404ae210b4f0334e3936e84f8edb6bc8 , < 664022fa1c93f4eba09ef5ee02411b9709dd7a93 (git) Affected: 1a70200f404ae210b4f0334e3936e84f8edb6bc8 , < c3c126a6142a1335bc8c34a5607c39cf01daf295 (git) Affected: 1a70200f404ae210b4f0334e3936e84f8edb6bc8 , < c17c87bde6d6f5252a6a6f0a94b2430164aa28d5 (git) Affected: 1a70200f404ae210b4f0334e3936e84f8edb6bc8 , < 7555ddd60af72df2862dd8f9b730a9848577edda (git) Affected: 1a70200f404ae210b4f0334e3936e84f8edb6bc8 , < eb4f9127a2b8a152743f1ee597627e2f69cb54fe (git) Affected: 1a70200f404ae210b4f0334e3936e84f8edb6bc8 , < eaa948c0e19b1bb2d93262207bca0c3d19cc3406 (git)	guessed
Linux	Linux	Affected: 6.0 Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/auth.c",
            "drivers/nvme/target/core.c",
            "drivers/nvme/target/nvmet.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "664022fa1c93f4eba09ef5ee02411b9709dd7a93",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
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              "status": "affected",
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/auth.c",
            "drivers/nvme/target/core.c",
            "drivers/nvme/target/nvmet.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc2",
                  "versionStartIncluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: Synchronize timeout work during SQ teardown\n\nnvmet_auth_sq_free() cancels auth_expired_work with\ncancel_delayed_work(). If the work has already started, cancellation does\nnot wait for the callback. Transport teardown can consequently free or\nreuse the queue containing struct nvmet_sq while\nnvmet_auth_expired_work() still accesses that SQ.\n\nAdd a teardown-specific helper that synchronously drains the delayed work\nbefore freeing authentication state, and use it from nvmet_sq_destroy().\nKeep the non-synchronous helper for in-band authentication state cleanup,\nwhere the SQ owner remains alive."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The UAF is in nvmet-auth timeout work reached via AUTH_SEND on NVMe-oF targets; nvmet-tcp (and nvmet-rdma) accept remote connections, so a network initiator can arm the timer and tear down the queue over TCP/RDMA.\nAC:L - The attacker controls both sides of the race: AUTH_SEND schedules auth_expired_work with an attacker-chosen KATO delay, and closing the connection runs nvmet_sq_destroy(); cancel_delayed_work() does not wait, so the race is repeatable.\nPR:N - AUTH_SEND is dispatched as a Fabrics command before nvmet_check_auth_status() and before DH-HMAC-CHAP credentials are verified; discovery accepts any host NQN, so no Linux privileges or verified secrets are required.\nUI:N - No victim user action is required; the attacker connects to an already-deployed NVMe-oF target, sends AUTH_SEND to arm the timeout, and disconnects when the work is due.\nS:U - The use-after-free corrupts the in-kernel nvmet_sq/queue object on the target host and does not cross a VM, hypervisor, or IOMMU security boundary.\nC:H - Transport teardown can free or reuse the queue containing struct nvmet_sq while nvmet_auth_expired_work() still accesses it; that UAF can be leveraged for kernel information disclosure via heap reuse.\nI:H - The delayed work writes dhchap_step and dhchap_tid into a potentially freed or reused queue object, giving a kernel UAF write primitive exploitable for memory corruption and control-flow hijacking.\nA:H - Racing the timeout callback against SQ teardown is a kernel UAF of the queue and can oops or panic; the work may also dereference sq-\u003ectrl after teardown has already cleared it."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:40:49.745Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/664022fa1c93f4eba09ef5ee02411b9709dd7a93"
        },
        {
          "url": "https://git.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295"
        },
        {
          "url": "https://git.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5"
        },
        {
          "url": "https://git.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577edda"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe"
        },
        {
          "url": "https://git.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406"
        }
      ],
      "title": "nvmet-auth: Synchronize timeout work during SQ teardown",
      "x_generator": {
        "engine": "bippy-1.2.0"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89970",
    "datePublished": "2026-09-16T10:32:50.306Z",
    "dateReserved": "2026-09-11T19:38:34.778Z",
    "dateUpdated": "2026-09-16T14:40:49.745Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-89970\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-16T11:17:07.660\",\"lastModified\":\"2026-09-16T15:18:21.387\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvmet-auth: Synchronize timeout work during SQ teardown\\n\\nnvmet_auth_sq_free() cancels auth_expired_work with\\ncancel_delayed_work(). If the work has already started, cancellation does\\nnot wait for the callback. Transport teardown can consequently free or\\nreuse the queue containing struct nvmet_sq while\\nnvmet_auth_expired_work() still accesses that SQ.\\n\\nAdd a teardown-specific helper that synchronously drains the delayed work\\nbefore freeing authentication state, and use it from nvmet_sq_destroy().\\nKeep the non-synchronous helper for in-band authentication state cleanup,\\nwhere the SQ owner remains alive.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/nvme/target/auth.c\",\"drivers/nvme/target/core.c\",\"drivers/nvme/target/nvmet.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"1a70200f404ae210b4f0334e3936e84f8edb6bc8\",\"lessThan\":\"664022fa1c93f4eba09ef5ee02411b9709dd7a93\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a70200f404ae210b4f0334e3936e84f8edb6bc8\",\"lessThan\":\"c3c126a6142a1335bc8c34a5607c39cf01daf295\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a70200f404ae210b4f0334e3936e84f8edb6bc8\",\"lessThan\":\"c17c87bde6d6f5252a6a6f0a94b2430164aa28d5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a70200f404ae210b4f0334e3936e84f8edb6bc8\",\"lessThan\":\"7555ddd60af72df2862dd8f9b730a9848577edda\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a70200f404ae210b4f0334e3936e84f8edb6bc8\",\"lessThan\":\"eb4f9127a2b8a152743f1ee597627e2f69cb54fe\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1a70200f404ae210b4f0334e3936e84f8edb6bc8\",\"lessThan\":\"eaa948c0e19b1bb2d93262207bca0c3d19cc3406\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/nvme/target/auth.c\",\"drivers/nvme/target/core.c\",\"drivers/nvme/target/nvmet.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.0\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.0\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.110\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.51\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.5\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/664022fa1c93f4eba09ef5ee02411b9709dd7a93\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577edda\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}

FKIE_CVE-2026-89970

Vulnerability from fkie_nvd - Published: 2026-09-16 11:17 - Updated: 2026-09-16 15:18

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/664022fa1c93f4eba09ef5ee02411b9709dd7a93
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577edda
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/auth.c",
            "drivers/nvme/target/core.c",
            "drivers/nvme/target/nvmet.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "664022fa1c93f4eba09ef5ee02411b9709dd7a93",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
              "lessThan": "c3c126a6142a1335bc8c34a5607c39cf01daf295",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
              "lessThan": "c17c87bde6d6f5252a6a6f0a94b2430164aa28d5",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
              "lessThan": "7555ddd60af72df2862dd8f9b730a9848577edda",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
              "lessThan": "eb4f9127a2b8a152743f1ee597627e2f69cb54fe",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            },
            {
              "lessThan": "eaa948c0e19b1bb2d93262207bca0c3d19cc3406",
              "status": "affected",
              "version": "1a70200f404ae210b4f0334e3936e84f8edb6bc8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/auth.c",
            "drivers/nvme/target/core.c",
            "drivers/nvme/target/nvmet.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: Synchronize timeout work during SQ teardown\n\nnvmet_auth_sq_free() cancels auth_expired_work with\ncancel_delayed_work(). If the work has already started, cancellation does\nnot wait for the callback. Transport teardown can consequently free or\nreuse the queue containing struct nvmet_sq while\nnvmet_auth_expired_work() still accesses that SQ.\n\nAdd a teardown-specific helper that synchronously drains the delayed work\nbefore freeing authentication state, and use it from nvmet_sq_destroy().\nKeep the non-synchronous helper for in-band authentication state cleanup,\nwhere the SQ owner remains alive."
    }
  ],
  "id": "CVE-2026-89970",
  "lastModified": "2026-09-16T15:18:21.387",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-16T11:17:07.660",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/664022fa1c93f4eba09ef5ee02411b9709dd7a93"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577edda"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-P375-RP8X-7V2G

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:31

Details

In the Linux kernel, the following vulnerability has been resolved:

nvmet-auth: Synchronize timeout work during SQ teardown

nvmet_auth_sq_free() cancels auth_expired_work with cancel_delayed_work(). If the work has already started, cancellation does not wait for the callback. Transport teardown can consequently free or reuse the queue containing struct nvmet_sq while nvmet_auth_expired_work() still accesses that SQ.

Add a teardown-specific helper that synchronously drains the delayed work before freeing authentication state, and use it from nvmet_sq_destroy(). Keep the non-synchronous helper for in-band authentication state cleanup, where the SQ owner remains alive.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89970"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:17:07Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-auth: Synchronize timeout work during SQ teardown\n\nnvmet_auth_sq_free() cancels auth_expired_work with\ncancel_delayed_work(). If the work has already started, cancellation does\nnot wait for the callback. Transport teardown can consequently free or\nreuse the queue containing struct nvmet_sq while\nnvmet_auth_expired_work() still accesses that SQ.\n\nAdd a teardown-specific helper that synchronously drains the delayed work\nbefore freeing authentication state, and use it from nvmet_sq_destroy().\nKeep the non-synchronous helper for in-band authentication state cleanup,\nwhere the SQ owner remains alive.",
  "id": "GHSA-p375-rp8x-7v2g",
  "modified": "2026-09-16T15:31:03Z",
  "published": "2026-09-16T12:30:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89970"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/664022fa1c93f4eba09ef5ee02411b9709dd7a93"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7555ddd60af72df2862dd8f9b730a9848577edda"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c17c87bde6d6f5252a6a6f0a94b2430164aa28d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3c126a6142a1335bc8c34a5607c39cf01daf295"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eaa948c0e19b1bb2d93262207bca0c3d19cc3406"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb4f9127a2b8a152743f1ee597627e2f69cb54fe"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Action not permitted

CVE-2026-89970 (GCVE-0-2026-89970)

FKIE_CVE-2026-89970

GHSA-P375-RP8X-7V2G

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