Vulnerability-Lookup

FKIE_CVE-2026-43276

Vulnerability from fkie_nvd - Published: 2026-05-06 12:16 - Updated: 2026-05-08 19:32

Severity ?

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

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>

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f975a0955276579e2176a134366ed586071c7c6a	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fa3c2f8d9152344a478abb847081c1b5f84a94f5	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.0

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B4562EDA-AFEA-4C62-97CC-C83E109A5F19",
              "versionEndExcluding": "6.18.16",
              "versionStartIncluding": "6.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67",
              "versionEndExcluding": "6.19.6",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "F253B622-8837-4245-BCE5-A7BF8FC76A16",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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"
    }
  ],
  "id": "CVE-2026-43276",
  "lastModified": "2026-05-08T19:32:12.303",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-05-06T12:16:48.930",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f975a0955276579e2176a134366ed586071c7c6a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/fa3c2f8d9152344a478abb847081c1b5f84a94f5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-415"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

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

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:21

Title

net: mana: Fix double destroy_workqueue on service rescan PCI path

Summary

Severity ?

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/fa3c2f8d9152344a4…
https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8…
https://git.kernel.org/stable/c/f975a0955276579e2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 505cc26bcae00699bacaee66cd50ede7a9cc89cb , < fa3c2f8d9152344a478abb847081c1b5f84a94f5 (git) Affected: 505cc26bcae00699bacaee66cd50ede7a9cc89cb , < a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e (git) Affected: 505cc26bcae00699bacaee66cd50ede7a9cc89cb , < f975a0955276579e2176a134366ed586071c7c6a (git)
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)

Show details on NVD website

JSON

To clipboard

{
  "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"
            },
            {
              "lessThan": "f975a0955276579e2176a134366ed586071c7c6a",
              "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": "2026-05-11T22:21:25.701Z",
        "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": "2026-05-11T22:21:25.701Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

FKIE_CVE-2026-43276

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

Tags

Sightings

Nomenclature