CVE-2025-39728

low-risk
Published 2025-04-18

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 <snip> 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 ...

Do I need to act?

-
0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Affected Vendors

Linux

References (10)

Patch https://git.kernel.org/stable/c/00307934eb94aaa0a99addfb37b9fe206f945004
Patch https://git.kernel.org/stable/c/0fef48f4a70e45a93e73c39023c3a6ea624714d6
Patch https://git.kernel.org/stable/c/157de9e48007a20c65d02fc0229a16f38134a72d
Patch https://git.kernel.org/stable/c/24307866e0ac0a5ddb462e766ceda5e27a6fbbe3
Patch https://git.kernel.org/stable/c/4d29a6dcb51e346595a15b49693eeb728925ca43
Patch https://git.kernel.org/stable/c/a1500b98cd81a32fdfb9bc63c33bb9f0c2a0a1bf
Patch https://git.kernel.org/stable/c/d19d7345a7bcdb083b65568a11b11adffe0687af
Patch https://git.kernel.org/stable/c/d974e177369c034984cece9d7d4fada9f8b9c740
https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal