CVE-2025-39728

Medium

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 ...

Package Linux Kernel
Published 2025-04-18
Last modified 2025-11-03
CVSS version 3.1
Patch available
Yes

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-129

CVE-2025-39728 is classified as CWE-129

See CWE-129 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 5.5 and later are affected. Fixed in 5.10.236, 5.15.180, 6.1.134, 6.6.87, 6.12.23, 6.13.11, 6.14.2, 6.15 and their respective stable series.

Affected from
≥ 5.5
Fixed in
✓ 5.10.236 5.10.x ✓ 5.15.180 5.15.x ✓ 6.1.134 6.1.x ✓ 6.6.87 6.6.x ✓ 6.12.23 6.12.x ✓ 6.13.11 6.13.x ✓ 6.14.2 6.14.x ✓ 6.15

References

The following references provide additional information about CVE-2025-39728 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

8 patch commits total View all on NVD

Frequently asked questions

  • What is CVE-2025-39728?

    CVE-2025-39728 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.5 onward and has been patched in 5.10.236, 5.15.180, 6.1.134 and others. CVE-2025-39728 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2025-39728?

    CVE-2025-39728 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2025-39728?

    Yes — CVE-2025-39728 has been patched. Fixed versions include 5.10.236, 5.15.180, 6.1.134 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2025-39728 actively exploited?

    No — CVE-2025-39728 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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