{"id":"CVE-2025-71143","summary":"clk: samsung: exynos-clkout: Assign .num before accessing .hws","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nclk: samsung: exynos-clkout: Assign .num before accessing .hws\n\nCommit f316cdff8d67 (\"clk: Annotate struct clk_hw_onecell_data with\n__counted_by\") annotated the hws member of 'struct clk_hw_onecell_data'\nwith __counted_by, which informs the bounds sanitizer (UBSAN_BOUNDS)\nabout the number of elements in .hws[], so that it can warn when .hws[]\nis accessed out of bounds. As noted in that change, the __counted_by\nmember must be initialized with the number of elements before the first\narray access happens, otherwise there will be a warning from each access\nprior to the initialization because the number of elements is zero. This\noccurs in exynos_clkout_probe() due to .num being assigned after .hws[]\nhas been accessed:\n\n  UBSAN: array-index-out-of-bounds in drivers/clk/samsung/clk-exynos-clkout.c:178:18\n  index 0 is out of range for type 'clk_hw *[*]'\n\nMove the .num initialization to before the first access of .hws[],\nclearing up the warning.","modified":"2026-04-16T04:36:44.544724626Z","published":"2026-01-14T15:07:55.828Z","related":["SUSE-SU-2026:0447-1","SUSE-SU-2026:0472-1","SUSE-SU-2026:0587-1","SUSE-SU-2026:20555-1","SUSE-SU-2026:20599-1","SUSE-SU-2026:20615-1","openSUSE-SU-2026:20287-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71143.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/a317f63255ebc3dac378c79c5bff4f8d0561c290"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf33f0b7df13685234ccea7be7bfe316b60db4db"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eb1f3a6ab3efee2b52361879cdc2dc6b11f499c0"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fbf57f5e453dadadb3d29b2d1dbe067e3dc4e236"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71143.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-71143"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"f316cdff8d677db9ad9c90acb44c4cd535b0ee27"},{"fixed":"fbf57f5e453dadadb3d29b2d1dbe067e3dc4e236"},{"fixed":"eb1f3a6ab3efee2b52361879cdc2dc6b11f499c0"},{"fixed":"a317f63255ebc3dac378c79c5bff4f8d0561c290"},{"fixed":"cf33f0b7df13685234ccea7be7bfe316b60db4db"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-71143.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.6.0"},{"fixed":"6.6.120"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.64"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-71143.json"}}],"schema_version":"1.7.5"}