{"id":"DEBIAN-CVE-2023-54220","details":"In the Linux kernel, the following vulnerability has been resolved:  serial: 8250: Fix oops for port-\u003epm on uart_change_pm()  Unloading a hardware specific 8250 driver can produce error \"Unable to handle kernel paging request at virtual address\" about ten seconds after unloading the driver. This happens on uart_hangup() calling uart_change_pm().  Turns out commit 04e82793f068 (\"serial: 8250: Reinit port-\u003epm on port specific driver unbind\") was only a partial fix. If the hardware specific driver has initialized port-\u003epm function, we need to clear port-\u003epm too. Just reinitializing port-\u003eops does not do this. Otherwise serial8250_pm() will call port-\u003epm() instead of serial8250_do_pm().","modified":"2026-09-15T09:02:53.088410671Z","published":"2025-12-30T13:16:10.300Z","upstream":["CVE-2023-54220"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-54220"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.52-1"}]}],"versions":["6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54220.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.13-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54220.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.4.13-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-54220.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}