Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 before fbf57f5e453dadadb3d29b2d1dbe067e3dc4e236; affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 before eb1f3a6ab3efee2b52361879cdc2dc6b11f499c0; affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 before a317f63255ebc3dac378c79c5bff4f8d0561c290; affected f316cdff8d677db9ad9c90acb44c4cd535b0ee27 before cf33f0b7df13685234ccea7be7bfe316b60db4db |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 6.6.120 through 6.6.*; unaffected 6.12.64 through 6.12.*; unaffected 6.18.4 through 6.18.*; unaffected 6.19 through * |
CWE
No CWE identifiers supplied.