{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89721","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.752Z","datePublished":"2026-09-11T19:46:33.680Z","dateUpdated":"2026-09-11T19:46:33.680Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-11T19:46:33.680Z"},"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":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"],"versions":[{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","lessThan":"14afe18655c0951f4f85898f761bf92264e65ccd","status":"affected","versionType":"git"},{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","lessThan":"c1a62f9dcf531d56c56da2e4435386b6d264c69f","status":"affected","versionType":"git"},{"version":"b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b","lessThan":"4486e75ba647bd8b98fc1f053101b40caceeed4b","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"],"versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"6.18.50","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.4","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"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-rc1"}]}]}],"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"}}}}