{"api_version":"1","generated_at":"2026-10-01T09:08:38+00:00","cve":"CVE-2026-90422","urls":{"html":"https://cve.report/CVE-2026-90422","api":"https://cve.report/api/cve/CVE-2026-90422.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90422","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90422"},"summary":{"title":"clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path\n\nWhen mtk_clk_register_pllfhs function fails to register a PLL, it\nunregisters all PLLs and cleans up itself in its error path before\nreturning, so the function callers don't need to do it.\n\nBut contrary to mtk_clk_unregister_pllfhs function, that does almost\nthe same sequence, it does not free the IO memory mapped on fhctl node,\nleading to a leak.\n\nFix this leak by factorizing the cleanup sequence in a new private\nfunction and use it both mtk_clk_register_pllfhs and\nmtk_clk_unregister_pllfhs functions.\n\nAlso, change the loop index start value to avoid the -1 operation on\nindex at each loop.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:46","updated_at":"2026-09-17 17:17:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/fea0b4fd891a2af77b55e05b950e7ea55b5d234e","name":"https://git.kernel.org/stable/c/fea0b4fd891a2af77b55e05b950e7ea55b5d234e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d35e45e5bad4fabcf122126402b6c6dcb4379672","name":"https://git.kernel.org/stable/c/d35e45e5bad4fabcf122126402b6c6dcb4379672","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/540d91480bcb1b28a62d7023aa70947ea44c55b9","name":"https://git.kernel.org/stable/c/540d91480bcb1b28a62d7023aa70947ea44c55b9","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90422","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90422","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa d35e45e5bad4fabcf122126402b6c6dcb4379672 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa fea0b4fd891a2af77b55e05b950e7ea55b5d234e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d7964de8a8ea800910fdd4e365c42a9e7d5c54aa 540d91480bcb1b28a62d7023aa70947ea44c55b9 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.2","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"90422","cve":"CVE-2026-90422","epss":"0.001980000","percentile":"0.099000000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/clk/mediatek/clk-pllfh.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d35e45e5bad4fabcf122126402b6c6dcb4379672","status":"affected","version":"d7964de8a8ea800910fdd4e365c42a9e7d5c54aa","versionType":"git"},{"lessThan":"fea0b4fd891a2af77b55e05b950e7ea55b5d234e","status":"affected","version":"d7964de8a8ea800910fdd4e365c42a9e7d5c54aa","versionType":"git"},{"lessThan":"540d91480bcb1b28a62d7023aa70947ea44c55b9","status":"affected","version":"d7964de8a8ea800910fdd4e365c42a9e7d5c54aa","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/clk/mediatek/clk-pllfh.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.2"},{"lessThan":"6.2","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.2","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path\n\nWhen mtk_clk_register_pllfhs function fails to register a PLL, it\nunregisters all PLLs and cleans up itself in its error path before\nreturning, so the function callers don't need to do it.\n\nBut contrary to mtk_clk_unregister_pllfhs function, that does almost\nthe same sequence, it does not free the IO memory mapped on fhctl node,\nleading to a leak.\n\nFix this leak by factorizing the cleanup sequence in a new private\nfunction and use it both mtk_clk_register_pllfhs and\nmtk_clk_unregister_pllfhs functions.\n\nAlso, change the loop index start value to avoid the -1 operation on\nindex at each loop."}],"providerMetadata":{"dateUpdated":"2026-09-17T16:09:45.830Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d35e45e5bad4fabcf122126402b6c6dcb4379672"},{"url":"https://git.kernel.org/stable/c/fea0b4fd891a2af77b55e05b950e7ea55b5d234e"},{"url":"https://git.kernel.org/stable/c/540d91480bcb1b28a62d7023aa70947ea44c55b9"}],"title":"clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90422","datePublished":"2026-09-17T16:09:45.830Z","dateReserved":"2026-09-11T19:38:34.814Z","dateUpdated":"2026-09-17T16:09:45.830Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:46","lastModifiedDate":"2026-09-17 17:17:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90422","Ordinal":"1","Title":"clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs e","CVE":"CVE-2026-90422","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90422","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs error path\n\nWhen mtk_clk_register_pllfhs function fails to register a PLL, it\nunregisters all PLLs and cleans up itself in its error path before\nreturning, so the function callers don't need to do it.\n\nBut contrary to mtk_clk_unregister_pllfhs function, that does almost\nthe same sequence, it does not free the IO memory mapped on fhctl node,\nleading to a leak.\n\nFix this leak by factorizing the cleanup sequence in a new private\nfunction and use it both mtk_clk_register_pllfhs and\nmtk_clk_unregister_pllfhs functions.\n\nAlso, change the loop index start value to avoid the -1 operation on\nindex at each loop.","Type":"Description","Title":"clk: mediatek: pllfh: Fix IO remapping leak in register_pllfhs e"}]}}}