{"api_version":"1","generated_at":"2026-07-23T12:51:02+00:00","cve":"CVE-2026-53384","urls":{"html":"https://cve.report/CVE-2026-53384","api":"https://cve.report/api/cve/CVE-2026-53384.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53384","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53384"},"summary":{"title":"serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 12:16:49","updated_at":"2026-07-20 15:16:40"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"9.8","severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/511d2b92f8d20de04acafab676150d26fb5c67f4","name":"https://git.kernel.org/stable/c/511d2b92f8d20de04acafab676150d26fb5c67f4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ccdf4510a3873b14e5e348cdb038717996f09fda","name":"https://git.kernel.org/stable/c/ccdf4510a3873b14e5e348cdb038717996f09fda","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3d205fe80f2181f0109150ad1fa06ee5bc046935","name":"https://git.kernel.org/stable/c/3d205fe80f2181f0109150ad1fa06ee5bc046935","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/10fc708b4de7f86002d2d735a2dbf3b5b7f65692","name":"https://git.kernel.org/stable/c/10fc708b4de7f86002d2d735a2dbf3b5b7f65692","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/07ffe414a708ae60551401cec5d727ed156b8caf","name":"https://git.kernel.org/stable/c/07ffe414a708ae60551401cec5d727ed156b8caf","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d72650a4f334581b23a1892b888a4cb1be142f76","name":"https://git.kernel.org/stable/c/d72650a4f334581b23a1892b888a4cb1be142f76","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/778b9dda4b24005a27bcd9c35c110bf8d7f259ca","name":"https://git.kernel.org/stable/c/778b9dda4b24005a27bcd9c35c110bf8d7f259ca","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53384","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53384","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cc816969d7b5973d2720d9afd381f06f0eac6885 ccdf4510a3873b14e5e348cdb038717996f09fda git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cc816969d7b5973d2720d9afd381f06f0eac6885 511d2b92f8d20de04acafab676150d26fb5c67f4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cc816969d7b5973d2720d9afd381f06f0eac6885 07ffe414a708ae60551401cec5d727ed156b8caf git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected cc816969d7b5973d2720d9afd381f06f0eac6885 3d205fe80f2181f0109150ad1fa06ee5bc046935 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.38 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.14 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.2 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53384","cve":"CVE-2026-53384","epss":"0.001730000","percentile":"0.069330000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/tty/serial/8250/8250_dw.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"ccdf4510a3873b14e5e348cdb038717996f09fda","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"},{"lessThan":"511d2b92f8d20de04acafab676150d26fb5c67f4","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"},{"lessThan":"07ffe414a708ae60551401cec5d727ed156b8caf","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"},{"lessThan":"3d205fe80f2181f0109150ad1fa06ee5bc046935","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"},{"lessThan":"d72650a4f334581b23a1892b888a4cb1be142f76","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"},{"lessThan":"778b9dda4b24005a27bcd9c35c110bf8d7f259ca","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"},{"lessThan":"10fc708b4de7f86002d2d735a2dbf3b5b7f65692","status":"affected","version":"cc816969d7b5973d2720d9afd381f06f0eac6885","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/tty/serial/8250/8250_dw.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.9"},{"lessThan":"5.9","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.177","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.144","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.95","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.38","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.14","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.177","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.144","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.95","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.38","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.14","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.2","versionStartIncluding":"5.9","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"5.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-07-20T13:39:48.833Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/ccdf4510a3873b14e5e348cdb038717996f09fda"},{"url":"https://git.kernel.org/stable/c/511d2b92f8d20de04acafab676150d26fb5c67f4"},{"url":"https://git.kernel.org/stable/c/07ffe414a708ae60551401cec5d727ed156b8caf"},{"url":"https://git.kernel.org/stable/c/3d205fe80f2181f0109150ad1fa06ee5bc046935"},{"url":"https://git.kernel.org/stable/c/d72650a4f334581b23a1892b888a4cb1be142f76"},{"url":"https://git.kernel.org/stable/c/778b9dda4b24005a27bcd9c35c110bf8d7f259ca"},{"url":"https://git.kernel.org/stable/c/10fc708b4de7f86002d2d735a2dbf3b5b7f65692"}],"title":"serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53384","datePublished":"2026-07-19T11:59:32.153Z","dateReserved":"2026-06-09T07:44:35.401Z","dateUpdated":"2026-07-20T13:39:48.833Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-19 12:16:49","lastModifiedDate":"2026-07-20 15:16:40","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53384","Ordinal":"1","Title":"serial: 8250_dw: unregister 8250 port if clk_notifier_register()","CVE":"CVE-2026-53384","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53384","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"serial: 8250_dw: unregister 8250 port if clk_notifier_register()"}]}}}