{"id":"CVE-2026-89721","revision":"1e32dc11fe2246f69999bcf81f029172","records":[{"revision":"1e32dc11fe2246f69999bcf81f029172","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89721","aliases":[],"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":0,"publishedAt":"2026-09-11T19:46:33.68+00:00","modifiedAt":"2026-10-19T08:51:33.997+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b\",\n                            \"lessThan\": \"14afe18655c0951f4f85898f761bf92264e65ccd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b\",\n                            \"lessThan\": \"c1a62f9dcf531d56c56da2e4435386b6d264c69f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b\",\n                            \"lessThan\": \"4486e75ba647bd8b98fc1f053101b40caceeed4b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd","https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f","https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89721","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89721","identifiers":["CVE-2026-89721"]},"retained":false,"historicalAffected":[]}],"coverage":[]}