CVE-2025-71143 - clk: samsung: exynos-clkout: Assign .num before accessing .hws

CVE-2025-71143 - clk: samsung: exynos-clkout: Assign .num before accessing .hws

https://cvefeed.io/rssfeed/latest.atom / Wed, 01/14/2026 - 16:57
CVE ID : CVE-2025-71143
Published : Jan. 14, 2026, 3:16 p.m. | 41 minutes ago
Description : In the Linux kernel, the following vulnerability has been resolved: clk: samsung: exynos-clkout: Assign .num before accessing .hws Commit f316cdff8d67 ("clk: Annotate struct clk_hw_onecell_data with __counted_by") annotated the hws member of 'struct clk_hw_onecell_data' with __counted_by, which informs the bounds sanitizer (UBSAN_BOUNDS) about the number of elements in .hws[], so that it can warn when .hws[] is accessed out of bounds. As noted in that change, the __counted_by member must be initialized with the number of elements before the first array access happens, otherwise there will be a warning from each access prior to the initialization because the number of elements is zero. This occurs in exynos_clkout_probe() due to .num being assigned after .hws[] has been accessed: UBSAN: array-index-out-of-bounds in drivers/clk/samsung/clk-exynos-clkout.c:178:18 index 0 is out of range for type 'clk_hw *[*]' Move the .num initialization to before the first access of .hws[], clearing up the warning.
Severity: 0.0 | NA
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