CVE-2025-39728 Information

Description

In the Linux kernel the following vulnerability has been resolved:

clk: samsung: Fix UBSAN panic in samsung_clk_init()

With UBSAN_ARRAY_BOUNDS=y I’m hitting the below panic due to dereferencing ctx->clk_data.hws before setting ctx->clk_data.num = nr_clks. Move that up to fix the crash.

UBSAN: array index out of bounds: 00000000f2005512 [1] PREEMPT SMP Call trace: samsung_clk_init+0x110/0x124 (P) samsung_clk_init+0x48/0x124 (L) samsung_cmu_register_one+0x3c/0xa0 exynos_arm64_register_cmu+0x54/0x64 __gs101_cmu_top_of_clk_init_declare+0x28/0x60 …

Reference

https://git.kernel.org/stable/c/00307934eb94aaa0a99addfb37b9fe206f945004 https://git.kernel.org/stable/c/0fef48f4a70e45a93e73c39023c3a6ea624714d6 https://git.kernel.org/stable/c/157de9e48007a20c65d02fc0229a16f38134a72d https://git.kernel.org/stable/c/24307866e0ac0a5ddb462e766ceda5e27a6fbbe3 https://git.kernel.org/stable/c/4d29a6dcb51e346595a15b49693eeb728925ca43 https://git.kernel.org/stable/c/a1500b98cd81a32fdfb9bc63c33bb9f0c2a0a1bf https://git.kernel.org/stable/c/d19d7345a7bcdb083b65568a11b11adffe0687af https://git.kernel.org/stable/c/d974e177369c034984cece9d7d4fada9f8b9c740