{"api_version":"1","generated_at":"2026-08-22T04:27:09+00:00","cve":"CVE-2026-72486","urls":{"html":"https://cve.report/CVE-2026-72486","api":"https://cve.report/api/cve/CVE-2026-72486.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-72486","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-72486"},"summary":{"title":"mailbox: mtk-adsp: fix UAF during device teardown","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-adsp: fix UAF during device teardown\n\nWhen the SOF audio driver fails to initialize (e.g. firmware boot\ntimeout), its devres unwind frees the snd_sof_dev object that the\nmailbox client (mtk-adsp-ipc) reaches via chan->cl->rx_callback.\nThe mtk-adsp-mailbox shutdown clears the mailbox command registers\nbut leaves the IRQ line unmasked, so a late interrupt can still\nqueue a threaded handler after mbox_free_channel() had cleared\nchan->cl, and mbox_chan_received_data() would then trigger UAF:\n\n  BUG: KASAN: slab-use-after-free in sof_ipc3_validate_fw_version\n   sof_ipc3_validate_fw_version\n   sof_ipc3_do_rx_work\n   sof_ipc3_rx_msg\n   mt8196_dsp_handle_request\n   mtk_adsp_ipc_recv\n   mbox_chan_received_data\n   mtk_adsp_mbox_isr\n   irq_thread_fn\n  Freed by task ...:\n   kfree\n   devres_release_all\n   really_probe\n   ... (sof-audio-of-mt8196 probe failure)\n\nThe crash was observed roughly three seconds after the failed probe.\n\ndisable_irq() in shutdown and enable_irq() in startup. disable_irq()\nalso waits for any in-flight interrupts, so by the time\nmbox_free_channel() proceeds to clear chan->cl no rx_callback can run.\n\nIn addition, request the IRQ with IRQF_NO_AUTOEN so it stays masked\nbetween probe and the first client bind — otherwise an early interrupt\ncan crash on chan->cl == NULL in mbox_chan_received_data().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 06:22:22","updated_at":"2026-08-17 06:19:16"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7d881615fb6373f71fc628b3f00186aeca87a3d5","name":"https://git.kernel.org/stable/c/7d881615fb6373f71fc628b3f00186aeca87a3d5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9","name":"https://git.kernel.org/stable/c/e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc","name":"https://git.kernel.org/stable/c/25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fc6c3deb1d4c0adebf7dee0b8af4082af3f17690","name":"https://git.kernel.org/stable/c/fc6c3deb1d4c0adebf7dee0b8af4082af3f17690","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b6337a08a63eef8efcffe3c01d479badda6bbbdb","name":"https://git.kernel.org/stable/c/b6337a08a63eef8efcffe3c01d479badda6bbbdb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b57d1a40bc43258372fa1f4d39305e093947a262","name":"https://git.kernel.org/stable/c/b57d1a40bc43258372fa1f4d39305e093947a262","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-72486","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72486","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 b6337a08a63eef8efcffe3c01d479badda6bbbdb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 fc6c3deb1d4c0adebf7dee0b8af4082af3f17690 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 7d881615fb6373f71fc628b3f00186aeca87a3d5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 b57d1a40bc43258372fa1f4d39305e093947a262 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"72486","cve":"CVE-2026-72486","epss":"0.001800000","percentile":"0.078740000","score_date":"2026-08-17","updated_at":"2026-08-18 00:11:47"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/mailbox/mtk-adsp-mailbox.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b6337a08a63eef8efcffe3c01d479badda6bbbdb","status":"affected","version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","versionType":"git"},{"lessThan":"e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9","status":"affected","version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","versionType":"git"},{"lessThan":"fc6c3deb1d4c0adebf7dee0b8af4082af3f17690","status":"affected","version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","versionType":"git"},{"lessThan":"7d881615fb6373f71fc628b3f00186aeca87a3d5","status":"affected","version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","versionType":"git"},{"lessThan":"25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc","status":"affected","version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","versionType":"git"},{"lessThan":"b57d1a40bc43258372fa1f4d39305e093947a262","status":"affected","version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/mailbox/mtk-adsp-mailbox.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.18"},{"lessThan":"5.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"5.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"5.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"5.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"5.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-adsp: fix UAF during device teardown\n\nWhen the SOF audio driver fails to initialize (e.g. firmware boot\ntimeout), its devres unwind frees the snd_sof_dev object that the\nmailbox client (mtk-adsp-ipc) reaches via chan->cl->rx_callback.\nThe mtk-adsp-mailbox shutdown clears the mailbox command registers\nbut leaves the IRQ line unmasked, so a late interrupt can still\nqueue a threaded handler after mbox_free_channel() had cleared\nchan->cl, and mbox_chan_received_data() would then trigger UAF:\n\n  BUG: KASAN: slab-use-after-free in sof_ipc3_validate_fw_version\n   sof_ipc3_validate_fw_version\n   sof_ipc3_do_rx_work\n   sof_ipc3_rx_msg\n   mt8196_dsp_handle_request\n   mtk_adsp_ipc_recv\n   mbox_chan_received_data\n   mtk_adsp_mbox_isr\n   irq_thread_fn\n  Freed by task ...:\n   kfree\n   devres_release_all\n   really_probe\n   ... (sof-audio-of-mt8196 probe failure)\n\nThe crash was observed roughly three seconds after the failed probe.\n\ndisable_irq() in shutdown and enable_irq() in startup. disable_irq()\nalso waits for any in-flight interrupts, so by the time\nmbox_free_channel() proceeds to clear chan->cl no rx_callback can run.\n\nIn addition, request the IRQ with IRQF_NO_AUTOEN so it stays masked\nbetween probe and the first client bind — otherwise an early interrupt\ncan crash on chan->cl == NULL in mbox_chan_received_data()."}],"providerMetadata":{"dateUpdated":"2026-08-17T05:15:36.888Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b6337a08a63eef8efcffe3c01d479badda6bbbdb"},{"url":"https://git.kernel.org/stable/c/e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9"},{"url":"https://git.kernel.org/stable/c/fc6c3deb1d4c0adebf7dee0b8af4082af3f17690"},{"url":"https://git.kernel.org/stable/c/7d881615fb6373f71fc628b3f00186aeca87a3d5"},{"url":"https://git.kernel.org/stable/c/25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc"},{"url":"https://git.kernel.org/stable/c/b57d1a40bc43258372fa1f4d39305e093947a262"}],"title":"mailbox: mtk-adsp: fix UAF during device teardown","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-72486","datePublished":"2026-08-15T05:57:22.821Z","dateReserved":"2026-08-09T03:40:39.936Z","dateUpdated":"2026-08-17T05:15:36.888Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 06:22:22","lastModifiedDate":"2026-08-17 06:19:16","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"72486","Ordinal":"1","Title":"mailbox: mtk-adsp: fix UAF during device teardown","CVE":"CVE-2026-72486","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"72486","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-adsp: fix UAF during device teardown\n\nWhen the SOF audio driver fails to initialize (e.g. firmware boot\ntimeout), its devres unwind frees the snd_sof_dev object that the\nmailbox client (mtk-adsp-ipc) reaches via chan->cl->rx_callback.\nThe mtk-adsp-mailbox shutdown clears the mailbox command registers\nbut leaves the IRQ line unmasked, so a late interrupt can still\nqueue a threaded handler after mbox_free_channel() had cleared\nchan->cl, and mbox_chan_received_data() would then trigger UAF:\n\n  BUG: KASAN: slab-use-after-free in sof_ipc3_validate_fw_version\n   sof_ipc3_validate_fw_version\n   sof_ipc3_do_rx_work\n   sof_ipc3_rx_msg\n   mt8196_dsp_handle_request\n   mtk_adsp_ipc_recv\n   mbox_chan_received_data\n   mtk_adsp_mbox_isr\n   irq_thread_fn\n  Freed by task ...:\n   kfree\n   devres_release_all\n   really_probe\n   ... (sof-audio-of-mt8196 probe failure)\n\nThe crash was observed roughly three seconds after the failed probe.\n\ndisable_irq() in shutdown and enable_irq() in startup. disable_irq()\nalso waits for any in-flight interrupts, so by the time\nmbox_free_channel() proceeds to clear chan->cl no rx_callback can run.\n\nIn addition, request the IRQ with IRQF_NO_AUTOEN so it stays masked\nbetween probe and the first client bind — otherwise an early interrupt\ncan crash on chan->cl == NULL in mbox_chan_received_data().","Type":"Description","Title":"mailbox: mtk-adsp: fix UAF during device teardown"}]}}}