{"api_version":"1","generated_at":"2026-08-04T08:53:28+00:00","cve":"CVE-2025-40284","urls":{"html":"https://cve.report/CVE-2025-40284","api":"https://cve.report/api/cve/CVE-2025-40284.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-40284","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-40284"},"summary":{"title":"Bluetooth: MGMT: cancel mesh send timer when hdev removed","description":"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------","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-06 22:15:56","updated_at":"2026-07-30 06:24:26"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"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"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea","name":"https://git.kernel.org/stable/c/fd62ca5ad136dcf6f5aa308423b299a6be6f54ea","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961","name":"https://git.kernel.org/stable/c/55fb52ffdd62850d667ebed842815e072d3c9961","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76","name":"https://git.kernel.org/stable/c/990e6143b0ca0c66f099d67d00c112bf59b30d76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa","name":"https://git.kernel.org/stable/c/2927ff643607eddf4f03d10ef80fe10d977154aa","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b","name":"https://git.kernel.org/stable/c/7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-40284","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40284","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 990e6143b0ca0c66f099d67d00c112bf59b30d76 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 2927ff643607eddf4f03d10ef80fe10d977154aa git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 fd62ca5ad136dcf6f5aa308423b299a6be6f54ea git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b338d91703fae6f6afd67f3f75caa3b8f36ddef3 55fb52ffdd62850d667ebed842815e072d3c9961 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.159 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.117 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.59 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.17.9 6.17.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2025","cve_id":"40284","cve":"CVE-2025-40284","epss":"0.001240000","percentile":"0.025160000","score_date":"2026-07-31","updated_at":"2026-08-01 00:10:35"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/mgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"990e6143b0ca0c66f099d67d00c112bf59b30d76","status":"affected","version":"b338d91703fae6f6afd67f3f75caa3b8f36ddef3","versionType":"git"},{"lessThan":"2927ff643607eddf4f03d10ef80fe10d977154aa","status":"affected","version":"b338d91703fae6f6afd67f3f75caa3b8f36ddef3","versionType":"git"},{"lessThan":"7b6b6c077cad0601d62c3c34ab7ce3fb25deda7b","status":"affected","version":"b338d91703fae6f6afd67f3f75caa3b8f36ddef3","versionType":"git"},{"lessThan":"fd62ca5ad136dcf6f5aa308423b299a6be6f54ea","status":"affected","version":"b338d91703fae6f6afd67f3f75caa3b8f36ddef3","versionType":"git"},{"lessThan":"55fb52ffdd62850d667ebed842815e072d3c9961","status":"affected","version":"b338d91703fae6f6afd67f3f75caa3b8f36ddef3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/mgmt.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.1"},{"lessThan":"6.1","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.159","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.117","versionType":"semver"},{"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:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.159","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.117","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.59","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.17.9","versionStartIncluding":"6.1","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18","versionStartIncluding":"6.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-30T06:02:28.986Z","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":"2026-07-30T06:02:28.986Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-06 22:15:56","lastModifiedDate":"2026-07-30 06:24:26","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","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}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"40284","Ordinal":"1","Title":"Bluetooth: MGMT: cancel mesh send timer when hdev removed","CVE":"CVE-2025-40284","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"40284","Ordinal":"1","NoteData":"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------","Type":"Description","Title":"Bluetooth: MGMT: cancel mesh send timer when hdev removed"}]}}}