CVE-2025-71143

High

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.

SeverityHigh
CVSS7.8
Exploit probability—
ProductLinux Kernel
PublishedJan 14, 2026
First seenJan 14, 2026

How to fix

Update
  • linux linux_kernel6.6.120, 6.12.64, 6.18.4 or later

Affected products

ProductAffected versionsFixed in
linux linux_kernel6.6.1 ≤ v < 6.6.120, 6.7 ≤ v < 6.12.64, 6.13 ≤ v < 6.18.4, 6.6, 6.196.6.120, 6.12.64, 6.18.4

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.