{"api_version":"1","generated_at":"2026-08-23T02:50:03+00:00","cve":"CVE-2023-54220","urls":{"html":"https://cve.report/CVE-2023-54220","api":"https://cve.report/api/cve/CVE-2023-54220.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2023-54220","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-54220"},"summary":{"title":"serial: 8250: Fix oops for port->pm on uart_change_pm()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix oops for port->pm on uart_change_pm()\n\nUnloading a hardware specific 8250 driver can produce error \"Unable to\nhandle kernel paging request at virtual address\" about ten seconds after\nunloading the driver. This happens on uart_hangup() calling\nuart_change_pm().\n\nTurns out commit 04e82793f068 (\"serial: 8250: Reinit port->pm on port\nspecific driver unbind\") was only a partial fix. If the hardware specific\ndriver has initialized port->pm function, we need to clear port->pm too.\nJust reinitializing port->ops does not do this. Otherwise serial8250_pm()\nwill call port->pm() instead of serial8250_do_pm().","state":"PUBLISHED","assigner":"Linux","published_at":"2025-12-30 13:16:10","updated_at":"2026-08-04 11:16:37"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"7.8","severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b","name":"https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c","name":"https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816","name":"https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6","name":"https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573","name":"https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae","name":"https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534","name":"https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b","name":"https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-54220","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54220","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 490bf37eaabb0a857ed1ae8e75d8854e41662f1c 66f3e55960698c874b0598277913b478ecd29573 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected c9e080c3005fd183c56ff8f4d75edb5da0765d2c 720a297b334e85d34099e83d1f375b92c3efedd6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d5cd2928d31042a7c0a01464f9a8d95be736421d b653289ca6460a6552c8590b75dfa84a0140a46b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2c86a1305c1406f45ea780d06953c484ea1d9e6e bd70d0b28010d560a8be96b44fea86fe2ba016ae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1ba5594739d858e524ff0f398ee1ebfe0a8b9d41 18e27df4f2b4e257c317ba8076f31a888f6cc64b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872 0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 04e82793f068d2f0ffe62fcea03d007a8cdc16a7 375806616f8c772c33d40e112530887b37c1a816 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 04e82793f068d2f0ffe62fcea03d007a8cdc16a7 dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8e596aed5f2f98cf3e6e98d6fe1d689f4a319308 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.14.316 4.14.324 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.19.284 4.19.293 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.4.244 5.4.255 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.181 5.10.192 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.113 5.15.128 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.30 6.1.47 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.3.4 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.14.324 4.14.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.19.293 4.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.4.255 5.4.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.192 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.128 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.47 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.4.12 6.4.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2023","cve_id":"54220","cve":"CVE-2023-54220","epss":"0.001340000","percentile":"0.033210000","score_date":"2026-08-06","updated_at":"2026-08-07 00:14:20"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/serial/8250/8250_port.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"66f3e55960698c874b0598277913b478ecd29573","status":"affected","version":"490bf37eaabb0a857ed1ae8e75d8854e41662f1c","versionType":"git"},{"lessThan":"720a297b334e85d34099e83d1f375b92c3efedd6","status":"affected","version":"c9e080c3005fd183c56ff8f4d75edb5da0765d2c","versionType":"git"},{"lessThan":"b653289ca6460a6552c8590b75dfa84a0140a46b","status":"affected","version":"d5cd2928d31042a7c0a01464f9a8d95be736421d","versionType":"git"},{"lessThan":"bd70d0b28010d560a8be96b44fea86fe2ba016ae","status":"affected","version":"2c86a1305c1406f45ea780d06953c484ea1d9e6e","versionType":"git"},{"lessThan":"18e27df4f2b4e257c317ba8076f31a888f6cc64b","status":"affected","version":"1ba5594739d858e524ff0f398ee1ebfe0a8b9d41","versionType":"git"},{"lessThan":"0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c","status":"affected","version":"af4d6dbb1a92ea424ad1ba1d0c88c7fa2345d872","versionType":"git"},{"lessThan":"375806616f8c772c33d40e112530887b37c1a816","status":"affected","version":"04e82793f068d2f0ffe62fcea03d007a8cdc16a7","versionType":"git"},{"lessThan":"dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534","status":"affected","version":"04e82793f068d2f0ffe62fcea03d007a8cdc16a7","versionType":"git"},{"status":"affected","version":"8e596aed5f2f98cf3e6e98d6fe1d689f4a319308","versionType":"git"},{"lessThan":"4.14.324","status":"affected","version":"4.14.316","versionType":"semver"},{"lessThan":"4.19.293","status":"affected","version":"4.19.284","versionType":"semver"},{"lessThan":"5.4.255","status":"affected","version":"5.4.244","versionType":"semver"},{"lessThan":"5.10.192","status":"affected","version":"5.10.181","versionType":"semver"},{"lessThan":"5.15.128","status":"affected","version":"5.15.113","versionType":"semver"},{"lessThan":"6.1.47","status":"affected","version":"6.1.30","versionType":"semver"},{"lessThan":"6.4","status":"affected","version":"6.3.4","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/serial/8250/8250_port.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.4"},{"lessThan":"6.4","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"4.14.*","status":"unaffected","version":"4.14.324","versionType":"semver"},{"lessThanOrEqual":"4.19.*","status":"unaffected","version":"4.19.293","versionType":"semver"},{"lessThanOrEqual":"5.4.*","status":"unaffected","version":"5.4.255","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.192","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.128","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.47","versionType":"semver"},{"lessThanOrEqual":"6.4.*","status":"unaffected","version":"6.4.12","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.14.324","versionStartIncluding":"4.14.316","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"4.19.293","versionStartIncluding":"4.19.284","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.4.255","versionStartIncluding":"5.4.244","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.192","versionStartIncluding":"5.10.181","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.128","versionStartIncluding":"5.15.113","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.47","versionStartIncluding":"6.1.30","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.4.12","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.5","versionStartIncluding":"6.4","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3.4","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix oops for port->pm on uart_change_pm()\n\nUnloading a hardware specific 8250 driver can produce error \"Unable to\nhandle kernel paging request at virtual address\" about ten seconds after\nunloading the driver. This happens on uart_hangup() calling\nuart_change_pm().\n\nTurns out commit 04e82793f068 (\"serial: 8250: Reinit port->pm on port\nspecific driver unbind\") was only a partial fix. If the hardware specific\ndriver has initialized port->pm function, we need to clear port->pm too.\nJust reinitializing port->ops does not do this. Otherwise serial8250_pm()\nwill call port->pm() instead of serial8250_do_pm()."}],"metrics":[{"cvssV3_1":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-08-04T09:18:35.645Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/66f3e55960698c874b0598277913b478ecd29573"},{"url":"https://git.kernel.org/stable/c/720a297b334e85d34099e83d1f375b92c3efedd6"},{"url":"https://git.kernel.org/stable/c/b653289ca6460a6552c8590b75dfa84a0140a46b"},{"url":"https://git.kernel.org/stable/c/bd70d0b28010d560a8be96b44fea86fe2ba016ae"},{"url":"https://git.kernel.org/stable/c/18e27df4f2b4e257c317ba8076f31a888f6cc64b"},{"url":"https://git.kernel.org/stable/c/0c05493341d6f2097f75f0a5dbb7b53a9e8c5f6c"},{"url":"https://git.kernel.org/stable/c/375806616f8c772c33d40e112530887b37c1a816"},{"url":"https://git.kernel.org/stable/c/dfe2aeb226fd5e19b0ee795f4f6ed8bc494c1534"}],"title":"serial: 8250: Fix oops for port->pm on uart_change_pm()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2023-54220","datePublished":"2025-12-30T12:11:15.385Z","dateReserved":"2025-12-30T12:06:44.501Z","dateUpdated":"2026-08-04T09:18:35.645Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-12-30 13:16:10","lastModifiedDate":"2026-08-04 11:16:37","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2023","CveId":"54220","Ordinal":"1","Title":"serial: 8250: Fix oops for port->pm on uart_change_pm()","CVE":"CVE-2023-54220","Year":"2023"},"notes":[{"CveYear":"2023","CveId":"54220","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250: Fix oops for port->pm on uart_change_pm()\n\nUnloading a hardware specific 8250 driver can produce error \"Unable to\nhandle kernel paging request at virtual address\" about ten seconds after\nunloading the driver. This happens on uart_hangup() calling\nuart_change_pm().\n\nTurns out commit 04e82793f068 (\"serial: 8250: Reinit port->pm on port\nspecific driver unbind\") was only a partial fix. If the hardware specific\ndriver has initialized port->pm function, we need to clear port->pm too.\nJust reinitializing port->ops does not do this. Otherwise serial8250_pm()\nwill call port->pm() instead of serial8250_do_pm().","Type":"Description","Title":"serial: 8250: Fix oops for port->pm on uart_change_pm()"}]}}}