Linux Kernel up to 6.15.2 seg6 uninitialized pointer

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.15.185/6.1.141/6.6.93/6.12.33/6.15.2. It has been classified as problematic. This impacts an unknown function of the component seg6. The manipulation leads to uninitialized pointer. This vulnerability is traded as CVE-2025-38310. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 5.15.185/6.1.141/6.6.93/6.12.33/6.15.2. This issue affects an unknown code block of the component seg6. The manipulation with an unknown input leads to a uninitialized pointer vulnerability. Using CWE to declare the problem leads to CWE-824. The product accesses or uses a pointer that has not been initialized. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: seg6: Fix validation of nexthop addresses The kernel currently validates that the length of the provided nexthop address does not exceed the specified length. This can lead to the kernel reading uninitialized memory if user space provided a shorter length than the specified one. Fix by validating that the provided length exactly matches the specified one.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2025-38310 since 04/16/2025. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 253428 (SUSE SLES15 Security Update : kernel (SUSE-SU-2025:02923-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.15.186, 6.1.142, 6.6.94, 6.12.34, 6.15.3 or 6.16-rc1 eliminates this vulnerability. Applying the patch 668923c474608dd9ebce0fbcc41bd8a27aa73dd6/cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac/d2507aeea45b3c5aa24d5daae0cf3db76895c0b7/d5d9fd13bc19a3f9f2a951c5b6e934d84205789e/cd4cd09810211fa23609c5c1018352e9e1cd8e5a/7632fedb266d93ed0ed9f487133e6c6314a9b2d1 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 (253428) and CERT Bund (WID-SEC-2025-1522). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Dell Avamar
  • Dell NetWorker

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Uninitialized pointer
CWE: CWE-824 / CWE-908
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: 253428
Nessus Name: SUSE SLES15 Security Update : kernel (SUSE-SU-2025:02923-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.15.186/6.1.142/6.6.94/6.12.34/6.15.3/6.16-rc1
Patch: 668923c474608dd9ebce0fbcc41bd8a27aa73dd6/cef33a86bcb04ecf4dc10c56f6c42ee9d1c54bac/d2507aeea45b3c5aa24d5daae0cf3db76895c0b7/d5d9fd13bc19a3f9f2a951c5b6e934d84205789e/cd4cd09810211fa23609c5c1018352e9e1cd8e5a/7632fedb266d93ed0ed9f487133e6c6314a9b2d1

Timelineinfo

04/16/2025 CVE reserved
07/10/2025 +85 days Advisory disclosed
07/10/2025 +0 days VulDB entry created
12/19/2025 +162 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38310 (🔒)
GCVE (CVE): GCVE-0-2025-38310
GCVE (VulDB): GCVE-100-315929
CERT Bund: WID-SEC-2025-1522 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 07/10/2025 10:18
Updated: 12/19/2025 19:49
Changes: 07/10/2025 10:18 (57), 08/23/2025 23:33 (2), 10/11/2025 11:18 (7), 11/02/2025 19:43 (1), 12/07/2025 23:26 (1), 12/19/2025 19:49 (11)
Complete: 🔍
Cache ID: 216::103

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

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