How to scan and detect CVE-2025-38051 using Nuclei?

CyberVault provides a ready Nuclei YAML detection template for CVE-2025-38051 impacting debian debian_linux. Execute it via: nuclei -t cve-2025-38051.yaml -u .

Where can I find Proof of Concept (PoC) exploit code for CVE-2025-38051?

CyberVault provides an educational verification probe and PoC Python script for CVE-2025-38051 to audit exposed debian debian_linux services.

How do I fix CVE-2025-38051 vulnerability in debian debian_linux?

Review vendor security advisories and upgrade debian debian_linux to the latest patched release. Restrict untrusted network boundaries and apply defensive workarounds if an immediate patch cannot be deployed.

Is there a public exploit or PoC available for CVE-2025-38051?

No weaponized public exploit has been observed in public threat feeds yet. Continuous surveillance is active.

What is the severity and CVSS score of CVE-2025-38051?

CVE-2025-38051 is evaluated as HIGH with an authentic CVSS base score of 7.0.

HIGH CVSS 7.0

Published: 2025-06-18

CVE-2025-38051

debian debian_linux Security Advisory (CVE-2025-38051)

↗ Official NIST NVD Record

Seeking technical exploit breakdowns or verified PoC code for CVE-2025-38051?

🔬 Search Writeups & Exploit Archive →

CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-38051 impacting debian debian_linux. Evaluated with CVSS Base Score of 7.0 (HIGH).

Original NVD Description

Source: NIST NVD

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix use-after-free in cifs_fill_dirent There is a race condition in the readdir concurrency process, which may access the rsp buffer after it has been released, triggering the following KASAN warning. ================================================================== BUG: KASAN: slab-use-after-free in cifs_fill_dirent+0xb03/0xb60 [cifs] Read of size 4 at addr ffff8880099b819c by task a.out/342975 CPU: 2 UID: 0 PID: 342975 Comm: a.out Not tainted 6.15.0-rc6+ #240 PREEMPT(full) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x53/0x70 print_report+0xce/0x640 kasan_report+0xb8/0xf0 cifs_fill_dirent+0xb03/0xb60 [cifs] cifs_readdir+0x12cb/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f996f64b9f9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0d f7 c3 0c 00 f7 d8 64 89 8 RSP: 002b:00007f996f53de78 EFLAGS: 00000207 ORIG_RAX: 000000000000004e RAX: ffffffffffffffda RBX: 00007f996f53ecdc RCX: 00007f996f64b9f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f996f53dea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000207 R12: ffffffffffffff88 R13: 0000000000000000 R14: 00007ffc8cd9a500 R15: 00007f996f51e000 </TASK> Allocated by task 408: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x6e/0x70 kmem_cache_alloc_noprof+0x117/0x3d0 mempool_alloc_noprof+0xf2/0x2c0 cifs_buf_get+0x36/0x80 [cifs] allocate_buffers+0x1d2/0x330 [cifs] cifs_demultiplex_thread+0x22b/0x2690 [cifs] kthread+0x394/0x720 ret_from_fork+0x34/0x70 ret_from_fork_asm+0x1a/0x30 Freed by task 342979: kasan_save_stack+0x20/0x40 kasan_save_track+0x14/0x30 kasan_save_free_info+0x3b/0x60 __kasan_slab_free+0x37/0x50 kmem_cache_free+0x2b8/0x500 cifs_buf_release+0x3c/0x70 [cifs] cifs_readdir+0x1c97/0x3190 [cifs] iterate_dir+0x1a1/0x520 __x64_sys_getdents64+0x134/0x220 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e The buggy address belongs to the object at ffff8880099b8000 which belongs to the cache cifs_request of size 16588 The buggy address is located 412 bytes inside of freed 16588-byte region [ffff8880099b8000, ffff8880099bc0cc) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99b8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0x80000000000040(head|node=0|zone=1) page_type: f5(slab) raw: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 raw: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000040 ffff888001e03400 0000000000000000 dead000000000001 head: 0000000000000000 0000000000010001 00000000f5000000 0000000000000000 head: 0080000000000003 ffffea0000266e01 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880099b8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880099b8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880099b8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880099b8280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== POC is available in the link [1]. The problem triggering process is as follows: Process 1 Process 2 ----------------------------------- ---truncated---

📊 CVSS v3.1 Metric Breakdown

Attack Vector

Local (AV:L)

Requires local system execution permissions

Attack Complexity

High (AC:H)

Depends on race conditions or environment

Privileges Required

Low (PR:L)

Standard user access required

User Interaction

None (UI:N)

Zero human interaction required

Scope

Unchanged (S:U)

Confined to same security context

Confidentiality

High (C:H)

Total information disclosure

Integrity

High (I:H)

Total modification of target system

Availability

High (A:H)

Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product	debian / debian_linux
Affected Versions	11.0
Weakness Enumeration	CWE-416

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2025-38051 impacting debian debian_linux.

⚡ Nuclei Detection Template (YAML) cve-2025-38051.yaml

id: cve-2025-38051

info:
  name: debian debian_linux - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: high
  description: |
    Automated signature & scanner for CVE-2025-38051 affecting debian debian_linux.
    Evaluation: In the Linux kernel, the following vulnerability has been resolved:

smb: client: Fix use-after-free in cifs_fill_dirent

There is a race condition in...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-38051
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 7.0
    cve-id: CVE-2025-38051
    cwe-id: CWE-416
  tags: cve,cve-2025-38051,debian,debian_linux,high

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "debian_linux"
        part: body

🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-38051.py

# Proof-of-Concept Exploit & Verification Probe for CVE-2025-38051
# Target: debian debian_linux | CVSS: 7.0 (HIGH)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-38051 (debian debian_linux)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against debian debian_linux scope (11.0).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)

🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2025-38051.sh

# Recommended Remediation & Patching Commands for CVE-2025-38051
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install debian_linux 2>/dev/null || \
sudo dnf upgrade debian_linux 2>/dev/null || \
sudo yum update debian_linux

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i debian_linux 2>/dev/null || rpm -qa | grep -i debian_linux

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
Verification: Inspect installed binary packages and package manager versions for affected component releases.
Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.

⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Authorities

No records filed in this category.

Distributions

Technical Analysis

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-38051 in debian debian_linux?

Review vendor-specific security notices and update debian debian_linux packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2025-38051?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2025-38051?

CVE-2025-38051 is classified with a CVSS 3.1 Base Score of 7.0 (HIGH). Check the metric breakdown above for attack vector requirements.

Risk Snapshot

7.0

HIGH SEVERITY

CVE ID CVE-2025-38051

Weakness CWE-416

Vendor debian

Product debian_linux

Published 2025-06-18

Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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