CVE-2026-43276 (GCVE-0-2026-43276)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-06 11:28
VLAI?
Title
net: mana: Fix double destroy_workqueue on service rescan PCI path
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix double destroy_workqueue on service rescan PCI path While testing corner cases in the driver, a use-after-free crash was found on the service rescan PCI path. When mana_serv_reset() calls mana_gd_suspend(), mana_gd_cleanup() destroys gc->service_wq. If the subsequent mana_gd_resume() fails with -ETIMEDOUT or -EPROTO, the code falls through to mana_serv_rescan() which triggers pci_stop_and_remove_bus_device(). This invokes the PCI .remove callback (mana_gd_remove), which calls mana_gd_cleanup() a second time, attempting to destroy the already- freed workqueue. Fix this by NULL-checking gc->service_wq in mana_gd_cleanup() and setting it to NULL after destruction. Call stack of issue for reference: [Sat Feb 21 18:53:48 2026] Call Trace: [Sat Feb 21 18:53:48 2026] <TASK> [Sat Feb 21 18:53:48 2026] mana_gd_cleanup+0x33/0x70 [mana] [Sat Feb 21 18:53:48 2026] mana_gd_remove+0x3a/0xc0 [mana] [Sat Feb 21 18:53:48 2026] pci_device_remove+0x41/0xb0 [Sat Feb 21 18:53:48 2026] device_remove+0x46/0x70 [Sat Feb 21 18:53:48 2026] device_release_driver_internal+0x1e3/0x250 [Sat Feb 21 18:53:48 2026] device_release_driver+0x12/0x20 [Sat Feb 21 18:53:48 2026] pci_stop_bus_device+0x6a/0x90 [Sat Feb 21 18:53:48 2026] pci_stop_and_remove_bus_device+0x13/0x30 [Sat Feb 21 18:53:48 2026] mana_do_service+0x180/0x290 [mana] [Sat Feb 21 18:53:48 2026] mana_serv_func+0x24/0x50 [mana] [Sat Feb 21 18:53:48 2026] process_one_work+0x190/0x3d0 [Sat Feb 21 18:53:48 2026] worker_thread+0x16e/0x2e0 [Sat Feb 21 18:53:48 2026] kthread+0xf7/0x130 [Sat Feb 21 18:53:48 2026] ? __pfx_worker_thread+0x10/0x10 [Sat Feb 21 18:53:48 2026] ? __pfx_kthread+0x10/0x10 [Sat Feb 21 18:53:48 2026] ret_from_fork+0x269/0x350 [Sat Feb 21 18:53:48 2026] ? __pfx_kthread+0x10/0x10 [Sat Feb 21 18:53:48 2026] ret_from_fork_asm+0x1a/0x30 [Sat Feb 21 18:53:48 2026] </TASK>
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 505cc26bcae00699bacaee66cd50ede7a9cc89cb , < fa3c2f8d9152344a478abb847081c1b5f84a94f5 (git)
Affected: 505cc26bcae00699bacaee66cd50ede7a9cc89cb , < a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e (git)
Affected: 505cc26bcae00699bacaee66cd50ede7a9cc89cb , < f975a0955276579e2176a134366ed586071c7c6a (git)
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    Linux Linux Affected: 6.16
Unaffected: 0 , < 6.16 (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/gdma_main.c",
            "drivers/net/ethernet/microsoft/mana/mana_en.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fa3c2f8d9152344a478abb847081c1b5f84a94f5",
              "status": "affected",
              "version": "505cc26bcae00699bacaee66cd50ede7a9cc89cb",
              "versionType": "git"
            },
            {
              "lessThan": "a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e",
              "status": "affected",
              "version": "505cc26bcae00699bacaee66cd50ede7a9cc89cb",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "505cc26bcae00699bacaee66cd50ede7a9cc89cb",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/gdma_main.c",
            "drivers/net/ethernet/microsoft/mana/mana_en.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.16",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.6",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Fix double destroy_workqueue on service rescan PCI path\n\nWhile testing corner cases in the driver, a use-after-free crash\nwas found on the service rescan PCI path.\n\nWhen mana_serv_reset() calls mana_gd_suspend(), mana_gd_cleanup()\ndestroys gc-\u003eservice_wq. If the subsequent mana_gd_resume() fails\nwith -ETIMEDOUT or -EPROTO, the code falls through to\nmana_serv_rescan() which triggers pci_stop_and_remove_bus_device().\nThis invokes the PCI .remove callback (mana_gd_remove), which calls\nmana_gd_cleanup() a second time, attempting to destroy the already-\nfreed workqueue. Fix this by NULL-checking gc-\u003eservice_wq in\nmana_gd_cleanup() and setting it to NULL after destruction.\n\nCall stack of issue for reference:\n[Sat Feb 21 18:53:48 2026] Call Trace:\n[Sat Feb 21 18:53:48 2026]  \u003cTASK\u003e\n[Sat Feb 21 18:53:48 2026]  mana_gd_cleanup+0x33/0x70 [mana]\n[Sat Feb 21 18:53:48 2026]  mana_gd_remove+0x3a/0xc0 [mana]\n[Sat Feb 21 18:53:48 2026]  pci_device_remove+0x41/0xb0\n[Sat Feb 21 18:53:48 2026]  device_remove+0x46/0x70\n[Sat Feb 21 18:53:48 2026]  device_release_driver_internal+0x1e3/0x250\n[Sat Feb 21 18:53:48 2026]  device_release_driver+0x12/0x20\n[Sat Feb 21 18:53:48 2026]  pci_stop_bus_device+0x6a/0x90\n[Sat Feb 21 18:53:48 2026]  pci_stop_and_remove_bus_device+0x13/0x30\n[Sat Feb 21 18:53:48 2026]  mana_do_service+0x180/0x290 [mana]\n[Sat Feb 21 18:53:48 2026]  mana_serv_func+0x24/0x50 [mana]\n[Sat Feb 21 18:53:48 2026]  process_one_work+0x190/0x3d0\n[Sat Feb 21 18:53:48 2026]  worker_thread+0x16e/0x2e0\n[Sat Feb 21 18:53:48 2026]  kthread+0xf7/0x130\n[Sat Feb 21 18:53:48 2026]  ? __pfx_worker_thread+0x10/0x10\n[Sat Feb 21 18:53:48 2026]  ? __pfx_kthread+0x10/0x10\n[Sat Feb 21 18:53:48 2026]  ret_from_fork+0x269/0x350\n[Sat Feb 21 18:53:48 2026]  ? __pfx_kthread+0x10/0x10\n[Sat Feb 21 18:53:48 2026]  ret_from_fork_asm+0x1a/0x30\n[Sat Feb 21 18:53:48 2026]  \u003c/TASK\u003e"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-06T11:28:58.840Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fa3c2f8d9152344a478abb847081c1b5f84a94f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f975a0955276579e2176a134366ed586071c7c6a"
        }
      ],
      "title": "net: mana: Fix double destroy_workqueue on service rescan PCI path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43276",
    "datePublished": "2026-05-06T11:28:58.840Z",
    "dateReserved": "2026-05-01T14:12:55.998Z",
    "dateUpdated": "2026-05-06T11:28:58.840Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43276\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-06T12:16:48.930\",\"lastModified\":\"2026-05-06T13:07:51.607\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnet: mana: Fix double destroy_workqueue on service rescan PCI path\\n\\nWhile testing corner cases in the driver, a use-after-free crash\\nwas found on the service rescan PCI path.\\n\\nWhen mana_serv_reset() calls mana_gd_suspend(), mana_gd_cleanup()\\ndestroys gc-\u003eservice_wq. If the subsequent mana_gd_resume() fails\\nwith -ETIMEDOUT or -EPROTO, the code falls through to\\nmana_serv_rescan() which triggers pci_stop_and_remove_bus_device().\\nThis invokes the PCI .remove callback (mana_gd_remove), which calls\\nmana_gd_cleanup() a second time, attempting to destroy the already-\\nfreed workqueue. Fix this by NULL-checking gc-\u003eservice_wq in\\nmana_gd_cleanup() and setting it to NULL after destruction.\\n\\nCall stack of issue for reference:\\n[Sat Feb 21 18:53:48 2026] Call Trace:\\n[Sat Feb 21 18:53:48 2026]  \u003cTASK\u003e\\n[Sat Feb 21 18:53:48 2026]  mana_gd_cleanup+0x33/0x70 [mana]\\n[Sat Feb 21 18:53:48 2026]  mana_gd_remove+0x3a/0xc0 [mana]\\n[Sat Feb 21 18:53:48 2026]  pci_device_remove+0x41/0xb0\\n[Sat Feb 21 18:53:48 2026]  device_remove+0x46/0x70\\n[Sat Feb 21 18:53:48 2026]  device_release_driver_internal+0x1e3/0x250\\n[Sat Feb 21 18:53:48 2026]  device_release_driver+0x12/0x20\\n[Sat Feb 21 18:53:48 2026]  pci_stop_bus_device+0x6a/0x90\\n[Sat Feb 21 18:53:48 2026]  pci_stop_and_remove_bus_device+0x13/0x30\\n[Sat Feb 21 18:53:48 2026]  mana_do_service+0x180/0x290 [mana]\\n[Sat Feb 21 18:53:48 2026]  mana_serv_func+0x24/0x50 [mana]\\n[Sat Feb 21 18:53:48 2026]  process_one_work+0x190/0x3d0\\n[Sat Feb 21 18:53:48 2026]  worker_thread+0x16e/0x2e0\\n[Sat Feb 21 18:53:48 2026]  kthread+0xf7/0x130\\n[Sat Feb 21 18:53:48 2026]  ? __pfx_worker_thread+0x10/0x10\\n[Sat Feb 21 18:53:48 2026]  ? __pfx_kthread+0x10/0x10\\n[Sat Feb 21 18:53:48 2026]  ret_from_fork+0x269/0x350\\n[Sat Feb 21 18:53:48 2026]  ? __pfx_kthread+0x10/0x10\\n[Sat Feb 21 18:53:48 2026]  ret_from_fork_asm+0x1a/0x30\\n[Sat Feb 21 18:53:48 2026]  \u003c/TASK\u003e\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f975a0955276579e2176a134366ed586071c7c6a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa3c2f8d9152344a478abb847081c1b5f84a94f5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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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.

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  • 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.
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  • 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.