{
    "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"
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        }
    }
}