Answer in brief
CVE-2026-72486 records a Unknown severity vulnerability in mailbox: mtk-adsp: fix UAF during device teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <b6337a08a63eef8efcffe3c01d479badda6bbbdb || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9 || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <fc6c3deb1d4c0adebf7dee0b8af4082af3f17690 || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <7d881615fb6373f71fc628b3f00186aeca87a3d5 || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <b57d1a40bc43258372fa1f4d39305e093947a262 | b6337a08a63eef8efcffe3c01d479badda6bbbdb, e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9, fc6c3deb1d4c0adebf7dee0b8af4082af3f17690, 7d881615fb6373f71fc628b3f00186aeca87a3d5, 25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc, b57d1a40bc43258372fa1f4d39305e093947a262 |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: mailbox: mtk-adsp: fix UAF during device teardown When the SOF audio driver fails to initialize (e.g. firmware boot timeout), its devres unwind frees the snd_sof_dev object that the mailbox client (mtk-adsp-ipc) reaches via chan->cl->rx_callback. The mtk-adsp-mailbox shutdown clears the mailbox command registers but leaves the IRQ line unmasked, so a late interrupt can still queue a threaded handler after mbox_free_channel() had cleared chan->cl, and mbox_chan_received_data() would then trigger UAF: BUG: KASAN: slab-use-after-free in sof_ipc3_validate_fw_version sof_ipc3_validate_fw_version sof_ipc3_do_rx_work sof_ipc3_rx_msg mt8196_dsp_handle_request mtk_adsp_ipc_recv mbox_chan_received_data mtk_adsp_mbox_isr irq_thread_fn Freed by task ...: kfree devres_release_all really_probe ... (sof-audio-of-mt8196 probe failure) The crash was observed roughly three seconds after the failed probe. disable_irq() in shutdown and enable_irq() in startup. disable_irq() also waits for any in-flight interrupts, so by the time mbox_free_channel() proceeds to clear chan->cl no rx_callback can run. In addition, request the IRQ with IRQF_NO_AUTOEN so it stays masked between probe and the first client bind — otherwise an early interrupt can crash on chan->cl == NULL in mbox_chan_received_data().
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-72486 records a Unknown severity vulnerability in mailbox: mtk-adsp: fix UAF during device teardown. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <b6337a08a63eef8efcffe3c01d479badda6bbbdb || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9 || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <fc6c3deb1d4c0adebf7dee0b8af4082af3f17690 || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <7d881615fb6373f71fc628b3f00186aeca87a3d5 || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc || >=af2dfa96c52d042df5deb29fb6e32d3ff4d76a61 <b57d1a40bc43258372fa1f4d39305e093947a262 | b6337a08a63eef8efcffe3c01d479badda6bbbdb, e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9, fc6c3deb1d4c0adebf7dee0b8af4082af3f17690, 7d881615fb6373f71fc628b3f00186aeca87a3d5, 25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc, b57d1a40bc43258372fa1f4d39305e093947a262 |
| Linux/Linuxgeneric | 5.18 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: mailbox: mtk-adsp: fix UAF during device teardown When the SOF audio driver fails to initialize (e.g. firmware boot timeout), its devres unwind frees the snd_sof_dev object that the mailbox client (mtk-adsp-ipc) reaches via chan->cl->rx_callback. The mtk-adsp-mailbox shutdown clears the mailbox command registers but leaves the IRQ line unmasked, so a late interrupt can still queue a threaded handler after mbox_free_channel() had cleared chan->cl, and mbox_chan_received_data() would then trigger UAF: BUG: KASAN: slab-use-after-free in sof_ipc3_validate_fw_version sof_ipc3_validate_fw_version sof_ipc3_do_rx_work sof_ipc3_rx_msg mt8196_dsp_handle_request mtk_adsp_ipc_recv mbox_chan_received_data mtk_adsp_mbox_isr irq_thread_fn Freed by task ...: kfree devres_release_all really_probe ... (sof-audio-of-mt8196 probe failure) The crash was observed roughly three seconds after the failed probe. disable_irq() in shutdown and enable_irq() in startup. disable_irq() also waits for any in-flight interrupts, so by the time mbox_free_channel() proceeds to clear chan->cl no rx_callback can run. In addition, request the IRQ with IRQF_NO_AUTOEN so it stays masked between probe and the first client bind — otherwise an early interrupt can crash on chan->cl == NULL in mbox_chan_received_data().
Quoted source text, attributed separately from HOL analysis.