{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72486","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-09T03:40:39.936Z","datePublished":"2026-08-15T05:57:22.821Z","dateUpdated":"2026-08-17T05:15:36.888Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T05:15:36.888Z"},"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()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mailbox/mtk-adsp-mailbox.c"],"versions":[{"version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","lessThan":"b6337a08a63eef8efcffe3c01d479badda6bbbdb","status":"affected","versionType":"git"},{"version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","lessThan":"e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9","status":"affected","versionType":"git"},{"version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","lessThan":"fc6c3deb1d4c0adebf7dee0b8af4082af3f17690","status":"affected","versionType":"git"},{"version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","lessThan":"7d881615fb6373f71fc628b3f00186aeca87a3d5","status":"affected","versionType":"git"},{"version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","lessThan":"25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc","status":"affected","versionType":"git"},{"version":"af2dfa96c52d042df5deb29fb6e32d3ff4d76a61","lessThan":"b57d1a40bc43258372fa1f4d39305e093947a262","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/mailbox/mtk-adsp-mailbox.c"],"versions":[{"version":"5.18","status":"affected"},{"version":"0","lessThan":"5.18","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.97","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.40","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.5","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.18","versionEndExcluding":"7.2"}]}]}],"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"}}}}