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

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:21
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
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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"
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              "version": "6.19.6",
              "versionType": "semver"
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          "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"
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          "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",
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    "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"
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      "date": "2026-07-06",
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      "percentile": "0.01976"
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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\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"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\",\"versions\":[{\"version\":\"505cc26bcae00699bacaee66cd50ede7a9cc89cb\",\"lessThan\":\"fa3c2f8d9152344a478abb847081c1b5f84a94f5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"505cc26bcae00699bacaee66cd50ede7a9cc89cb\",\"lessThan\":\"a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"505cc26bcae00699bacaee66cd50ede7a9cc89cb\",\"lessThan\":\"f975a0955276579e2176a134366ed586071c7c6a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"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\",\"versions\":[{\"version\":\"6.16\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.16\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.16\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.6\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"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:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.16\",\"versionEndExcluding\":\"6.18.16\",\"matchCriteriaId\":\"B4562EDA-AFEA-4C62-97CC-C83E109A5F19\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.6\",\"matchCriteriaId\":\"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"F253B622-8837-4245-BCE5-A7BF8FC76A16\"}]}]}],\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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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

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.