Linux Kernel up to 6.12.38/6.15.6/6.16-rc5 clk __clk_register out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 6.12.38/6.15.6/6.16-rc5 and classified as problematic. This vulnerability affects the function __clk_register of the component clk. The manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2025-38446. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.12.38/6.15.6/6.16-rc5 and classified as problematic. This issue affects the function __clk_register of the component clk. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: clk: imx: Fix an out-of-bounds access in dispmix_csr_clk_dev_data When num_parents is 4, __clk_register() occurs an out-of-bounds when accessing parent_names member. Use ARRAY_SIZE() instead of hardcode number here. BUG: KASAN: global-out-of-bounds in __clk_register+0x1844/0x20d8 Read of size 8 at addr ffff800086988e78 by task kworker/u24:3/59 Hardware name: NXP i.MX95 19X19 board (DT) Workqueue: events_unbound deferred_probe_work_func Call trace: dump_backtrace+0x94/0xec show_stack+0x18/0x24 dump_stack_lvl+0x8c/0xcc print_report+0x398/0x5fc kasan_report+0xd4/0x114 __asan_report_load8_noabort+0x20/0x2c __clk_register+0x1844/0x20d8 clk_hw_register+0x44/0x110 __clk_hw_register_mux+0x284/0x3a8 imx95_bc_probe+0x4f4/0xa70

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2025-38446 since 04/16/2025. The exploitation is known to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 276629 (Ubuntu 24.04 LTS / 25.04 : Linux kernel vulnerabilities (USN-7879-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.39, 6.15.7 or 6.16-rc6 eliminates this vulnerability. Applying the patch fcee75daecc5234ee3482d8cf3518bf021d8a0a5/a956daad67cec454ee985e103e167711fab5b9b8/aacc875a448d363332b9df0621dde6d3a225ea9f is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (276629) and CERT Bund (WID-SEC-2025-1653). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.8

VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 276629
Nessus Name: Ubuntu 24.04 LTS / 25.04 : Linux kernel vulnerabilities (USN-7879-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.39/6.15.7/6.16-rc6
Patch: fcee75daecc5234ee3482d8cf3518bf021d8a0a5/a956daad67cec454ee985e103e167711fab5b9b8/aacc875a448d363332b9df0621dde6d3a225ea9f

Timelineinfo

04/16/2025 CVE reserved
07/25/2025 +100 days Advisory disclosed
07/25/2025 +0 days VulDB entry created
01/03/2026 +162 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38446 (🔒)
GCVE (CVE): GCVE-0-2025-38446
GCVE (VulDB): GCVE-100-317705
CERT Bund: WID-SEC-2025-1653 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/25/2025 19:09
Updated: 01/03/2026 23:51
Changes: 07/25/2025 19:09 (59), 07/30/2025 02:00 (1), 08/22/2025 19:43 (7), 09/15/2025 05:23 (1), 09/29/2025 02:13 (1), 11/02/2025 13:58 (1), 11/17/2025 06:19 (1), 11/20/2025 02:24 (11), 11/24/2025 19:11 (2), 01/03/2026 23:51 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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