Answer in brief
CVE-2026-53384 records a Critical severity (CVSS 9.8) vulnerability in serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails. 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.
CVSS is 9.8. 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.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=57f83e5dd6a33c4696699954784f8fee789b1d0c <ccdf4510a3873b14e5e348cdb038717996f09fda || >=57f83e5dd6a33c4696699954784f8fee789b1d0c <511d2b92f8d20de04acafab676150d26fb5c67f4 || >=57f83e5dd6a33c4696699954784f8fee789b1d0c <07ffe414a708ae60551401cec5d727ed156b8caf || >=57f83e5dd6a33c4696699954784f8fee789b1d0c <3d205fe80f2181f0109150ad1fa06ee5bc046935 || >=57f83e5dd6a33c4696699954784f8fee789b1d0c <d72650a4f334581b23a1892b888a4cb1be142f76 || >=57f83e5dd6a33c4696699954784f8fee789b1d0c <778b9dda4b24005a27bcd9c35c110bf8d7f259ca || >=57f83e5dd6a33c4696699954784f8fee789b1d0c <10fc708b4de7f86002d2d735a2dbf3b5b7f65692 | ccdf4510a3873b14e5e348cdb038717996f09fda, 511d2b92f8d20de04acafab676150d26fb5c67f4, 07ffe414a708ae60551401cec5d727ed156b8caf, 3d205fe80f2181f0109150ad1fa06ee5bc046935, d72650a4f334581b23a1892b888a4cb1be142f76, 778b9dda4b24005a27bcd9c35c110bf8d7f259ca, 10fc708b4de7f86002d2d735a2dbf3b5b7f65692 |
| Linux/Linuxgeneric | 5.19 | Not reported |
Published upstream
Jul 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails dw8250_probe() registers the 8250 port via serial8250_register_8250_port() and then, if the device has a clock, registers a clock notifier. If clk_notifier_register() fails, probe returns the error but leaves the 8250 port registered. The matching serial8250_unregister_port() lives in dw8250_remove(), which is not called when probe fails, so the port slot stays occupied until the device is rebound or the system is rebooted. The devm-allocated driver data is freed while the port still references it (via the saved private_data and serial_in/serial_out callbacks), so any access to that port slot before a rebind is a use-after-free hazard. Unregister the port on the clk_notifier_register() error path.
Quoted source text, attributed separately from HOL analysis.