CVE-2025-40284 (GCVE-0-2025-40284)

Vulnerability from cvelistv5 – Published: 2025-12-06 21:51 – Updated: 2025-12-06 21:51
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: cancel mesh send timer when hdev removed mesh_send_done timer is not canceled when hdev is removed, which causes crash if the timer triggers after hdev is gone. Cancel the timer when MGMT removes the hdev, like other MGMT timers. Should fix the BUG: sporadically seen by BlueZ test bot (in "Mesh - Send cancel - 1" test). Log: ------ BUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0 ... Freed by task 36: kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_save_free_info+0x3a/0x60 __kasan_slab_free+0x43/0x70 kfree+0x103/0x500 device_release+0x9a/0x210 kobject_put+0x100/0x1e0 vhci_release+0x18b/0x240 ------
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 990e6143b0ca0c66f099d67d00c112bf59b30d76 (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 2927ff643607eddf4f03d10ef80fe10d977154aa (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < fd62ca5ad136dcf6f5aa308423b299a6be6f54ea (git)
Affected: b338d91703fae6f6afd67f3f75caa3b8f36ddef3 , < 55fb52ffdd62850d667ebed842815e072d3c9961 (git)
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    Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.59 , ≤ 6.12.* (semver)
Unaffected: 6.17.9 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/mgmt.c"
          ],
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          "vendor": "Linux",
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "version": "6.1"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.59",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: MGMT: cancel mesh send timer when hdev removed\n\nmesh_send_done timer is not canceled when hdev is removed, which causes\ncrash if the timer triggers after hdev is gone.\n\nCancel the timer when MGMT removes the hdev, like other MGMT timers.\n\nShould fix the BUG: sporadically seen by BlueZ test bot\n(in \"Mesh - Send cancel - 1\" test).\n\nLog:\n------\nBUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0\n...\nFreed by task 36:\n kasan_save_stack+0x24/0x50\n kasan_save_track+0x14/0x30\n __kasan_save_free_info+0x3a/0x60\n __kasan_slab_free+0x43/0x70\n kfree+0x103/0x500\n device_release+0x9a/0x210\n kobject_put+0x100/0x1e0\n vhci_release+0x18b/0x240\n------"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-06T21:51:08.488Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76"
        },
        {
          "url": "https://git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa"
        },
        {
          "url": "https://git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961"
        }
      ],
      "title": "Bluetooth: MGMT: cancel mesh send timer when hdev removed",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-40284",
    "datePublished": "2025-12-06T21:51:08.488Z",
    "dateReserved": "2025-04-16T07:20:57.184Z",
    "dateUpdated": "2025-12-06T21:51:08.488Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-40284\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-06T22:15:56.530\",\"lastModified\":\"2025-12-08T18:26:49.133\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: MGMT: cancel mesh send timer when hdev removed\\n\\nmesh_send_done timer is not canceled when hdev is removed, which causes\\ncrash if the timer triggers after hdev is gone.\\n\\nCancel the timer when MGMT removes the hdev, like other MGMT timers.\\n\\nShould fix the BUG: sporadically seen by BlueZ test bot\\n(in \\\"Mesh - Send cancel - 1\\\" test).\\n\\nLog:\\n------\\nBUG: KASAN: slab-use-after-free in run_timer_softirq+0x76b/0x7d0\\n...\\nFreed by task 36:\\n kasan_save_stack+0x24/0x50\\n kasan_save_track+0x14/0x30\\n __kasan_save_free_info+0x3a/0x60\\n __kasan_slab_free+0x43/0x70\\n kfree+0x103/0x500\\n device_release+0x9a/0x210\\n kobject_put+0x100/0x1e0\\n vhci_release+0x18b/0x240\\n------\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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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.
  • 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.
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  • 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.



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