{"api_version":"1","generated_at":"2026-09-14T03:10:53+00:00","cve":"CVE-2026-89721","urls":{"html":"https://cve.report/CVE-2026-89721","api":"https://cve.report/api/cve/CVE-2026-89721.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89721","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89721"},"summary":{"title":"phy: rockchip-samsung-dcphy: fix out-of-range max_register","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nphy: rockchip-samsung-dcphy: fix out-of-range max_register\n\nThe PHY register block is 64KB, so with a register stride of 4 the\nlast accessible register sits at offset 0xfffc. max_register names\n0x10000, one register past the end of the mapping: dumping the\nregisters through the regmap debugfs interface reads beyond the\nioremapped region and oopses on the unmapped page. The oops fires\nwith the regmap lock held, so later PHY operations deadlock.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:01","updated_at":"2026-09-11 20:20:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b","name":"https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd","name":"https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f","name":"https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89721","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89721","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b 14afe18655c0951f4f85898f761bf92264e65ccd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b c1a62f9dcf531d56c56da2e4435386b6d264c69f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b 4486e75ba647bd8b98fc1f053101b40caceeed4b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 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":"89721","cve":"CVE-2026-89721","epss":"0.001980000","percentile":"0.096800000","score_date":"2026-09-13","updated_at":"2026-09-14 00:18:02"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"14afe18655c0951f4f85898f761bf92264e65ccd","status":"affected","version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","versionType":"git"},{"lessThan":"c1a62f9dcf531d56c56da2e4435386b6d264c69f","status":"affected","version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","versionType":"git"},{"lessThan":"4486e75ba647bd8b98fc1f053101b40caceeed4b","status":"affected","version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","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":"6.18.50","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nphy: rockchip-samsung-dcphy: fix out-of-range max_register\n\nThe PHY register block is 64KB, so with a register stride of 4 the\nlast accessible register sits at offset 0xfffc. max_register names\n0x10000, one register past the end of the mapping: dumping the\nregisters through the regmap debugfs interface reads beyond the\nioremapped region and oopses on the unmapped page. The oops fires\nwith the regmap lock held, so later PHY operations deadlock."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:33.680Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd"},{"url":"https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f"},{"url":"https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b"}],"title":"phy: rockchip-samsung-dcphy: fix out-of-range max_register","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89721","datePublished":"2026-09-11T19:46:33.680Z","dateReserved":"2026-09-11T19:38:34.752Z","dateUpdated":"2026-09-11T19:46:33.680Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:01","lastModifiedDate":"2026-09-11 20:20:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89721","Ordinal":"1","Title":"phy: rockchip-samsung-dcphy: fix out-of-range max_register","CVE":"CVE-2026-89721","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89721","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nphy: rockchip-samsung-dcphy: fix out-of-range max_register\n\nThe PHY register block is 64KB, so with a register stride of 4 the\nlast accessible register sits at offset 0xfffc. max_register names\n0x10000, one register past the end of the mapping: dumping the\nregisters through the regmap debugfs interface reads beyond the\nioremapped region and oopses on the unmapped page. The oops fires\nwith the regmap lock held, so later PHY operations deadlock.","Type":"Description","Title":"phy: rockchip-samsung-dcphy: fix out-of-range max_register"}]}}}