Linux Kernel up to 6.1.141/6.6.94/6.12.34/6.15.3 bpf rcu_read_lock_trace_held privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 6.1.141/6.6.94/6.12.34/6.15.3. Affected by this issue is the function rcu_read_lock_trace_held of the component bpf. This manipulation causes an unknown weakness. This vulnerability appears as CVE-2025-38202. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.1.141/6.6.94/6.12.34/6.15.3. It has been declared as problematic. Affected by this vulnerability is the function rcu_read_lock_trace_held of the component bpf. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: bpf: Check rcu_read_lock_trace_held() in bpf_map_lookup_percpu_elem() bpf_map_lookup_percpu_elem() helper is also available for sleepable bpf program. When BPF JIT is disabled or under 32-bit host, bpf_map_lookup_percpu_elem() will not be inlined. Using it in a sleepable bpf program will trigger the warning in bpf_map_lookup_percpu_elem(), because the bpf program only holds rcu_read_lock_trace lock. Therefore, add the missed check.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2025-38202 since 04/16/2025. The exploitation appears to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 249177 (Debian dsa-5973 : affs-modules-6.1.0-37-4kc-malta-di - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.1.142, 6.6.95, 6.12.35, 6.15.4 or 6.16-rc1 eliminates this vulnerability. Applying the patch 2f8c69a72e8ad87b36b8052f789da3cc2b2e186c/7bf4461f1c97207fda757014690d55a447ce859f/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22/b522d4d334f206284b1a44b0b0b2f99fd443b39b/d4965578267e2e81f67c86e2608481e77e9c8569 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 (249177), EUVD (EUVD-2025-20054) and CERT Bund (WID-SEC-2025-1465). 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: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
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: 249177
Nessus Name: Debian dsa-5973 : affs-modules-6.1.0-37-4kc-malta-di - security update

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.1.142/6.6.95/6.12.35/6.15.4/6.16-rc1
Patch: 2f8c69a72e8ad87b36b8052f789da3cc2b2e186c/7bf4461f1c97207fda757014690d55a447ce859f/2d834477bbc1e8b8a59ff8b0c081529d6bed7b22/b522d4d334f206284b1a44b0b0b2f99fd443b39b/d4965578267e2e81f67c86e2608481e77e9c8569

Timelineinfo

04/16/2025 CVE reserved
07/04/2025 +79 days Advisory disclosed
07/04/2025 +0 days VulDB entry created
12/19/2025 +168 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38202 (🔒)
GCVE (CVE): GCVE-0-2025-38202
GCVE (VulDB): GCVE-100-314953
EUVD: 🔒
CERT Bund: WID-SEC-2025-1465 - Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 07/04/2025 16:28
Updated: 12/19/2025 05:40
Changes: 07/04/2025 16:28 (57), 07/04/2025 19:12 (1), 07/20/2025 18:35 (7), 08/13/2025 22:05 (2), 08/25/2025 17:04 (1), 09/11/2025 05:53 (1), 09/21/2025 01:41 (1), 11/03/2025 00:43 (1), 12/13/2025 22:16 (1), 12/19/2025 05:40 (12)
Complete: 🔍
Cache ID: 216::103

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

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