GHSA-7W9G-XVFR-Q799
Vulnerability from github – Published: 2026-01-14 15:33 – Updated: 2026-01-14 15:33In 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": [],
"aliases": [
"CVE-2025-71143"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-14T15:16:04Z",
"severity": null
},
"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 \u0027struct clk_hw_onecell_data\u0027\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 \u0027clk_hw *[*]\u0027\n\nMove the .num initialization to before the first access of .hws[],\nclearing up the warning.",
"id": "GHSA-7w9g-xvfr-q799",
"modified": "2026-01-14T15:33:02Z",
"published": "2026-01-14T15:33:02Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71143"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": []
}
Sightings
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