{"id":"CVE-2026-89721","state":"PUBLISHED","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.","publishedAt":"2026-09-11T19:46:33.680Z","updatedAt":"2026-10-19T08:51:33.997Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","status":"affected","lessThan":"14afe18655c0951f4f85898f761bf92264e65ccd","versionType":"git"},{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","status":"affected","lessThan":"c1a62f9dcf531d56c56da2e4435386b6d264c69f","versionType":"git"},{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","status":"affected","lessThan":"4486e75ba647bd8b98fc1f053101b40caceeed4b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"]}],"references":["https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd","https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f","https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89721.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89721","state":"PUBLISHED","datePublished":"2026-09-11T19:46:33.680Z","dateUpdated":"2026-10-19T08:51:33.997Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-11T19:38:34.752Z"},"containers":{"cna":{"title":"phy: rockchip-samsung-dcphy: fix out-of-range max_register","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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","status":"affected","lessThan":"14afe18655c0951f4f85898f761bf92264e65ccd","versionType":"git"},{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","status":"affected","lessThan":"c1a62f9dcf531d56c56da2e4435386b6d264c69f","versionType":"git"},{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","status":"affected","lessThan":"4486e75ba647bd8b98fc1f053101b40caceeed4b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.15","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.15","versionType":"semver"},{"version":"6.18.50","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.4","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-19T08:51:33.997Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}