{"id":"CVE-2026-53384","summary":"serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_dw: unregister 8250 port if clk_notifier_register() fails\n\ndw8250_probe() registers the 8250 port via serial8250_register_8250_port()\nand then, if the device has a clock, registers a clock notifier. If\nclk_notifier_register() fails, probe returns the error but leaves the\n8250 port registered. The matching serial8250_unregister_port() lives\nin dw8250_remove(), which is not called when probe fails, so the port\nslot stays occupied until the device is rebound or the system is\nrebooted. The devm-allocated driver data is freed while the port still\nreferences it (via the saved private_data and serial_in/serial_out\ncallbacks), so any access to that port slot before a rebind is a\nuse-after-free hazard.\n\nUnregister the port on the clk_notifier_register() error path.","modified":"2026-07-23T09:59:47.100823126Z","published":"2026-07-19T11:59:32.153Z","related":["openSUSE-SU-2026:11339-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53384.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/07ffe414a708ae60551401cec5d727ed156b8caf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/10fc708b4de7f86002d2d735a2dbf3b5b7f65692"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3d205fe80f2181f0109150ad1fa06ee5bc046935"},{"type":"WEB","url":"https://git.kernel.org/stable/c/511d2b92f8d20de04acafab676150d26fb5c67f4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/778b9dda4b24005a27bcd9c35c110bf8d7f259ca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ccdf4510a3873b14e5e348cdb038717996f09fda"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d72650a4f334581b23a1892b888a4cb1be142f76"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53384.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53384"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"cc816969d7b5973d2720d9afd381f06f0eac6885"},{"fixed":"ccdf4510a3873b14e5e348cdb038717996f09fda"},{"fixed":"511d2b92f8d20de04acafab676150d26fb5c67f4"},{"fixed":"07ffe414a708ae60551401cec5d727ed156b8caf"},{"fixed":"3d205fe80f2181f0109150ad1fa06ee5bc046935"},{"fixed":"d72650a4f334581b23a1892b888a4cb1be142f76"},{"fixed":"778b9dda4b24005a27bcd9c35c110bf8d7f259ca"},{"fixed":"10fc708b4de7f86002d2d735a2dbf3b5b7f65692"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53384.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.9.0"},{"fixed":"6.1.177"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.144"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.95"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.38"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.0.14"}]},{"type":"ECOSYSTEM","events":[{"introduced":"7.1.0"},{"fixed":"7.1.2"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53384.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}