4.7
MEDIUM
CVE-2024-56729
Samba SMB Reference Leak
Description

In the Linux kernel, the following vulnerability has been resolved: smb: Initialize cfid->tcon before performing network ops Avoid leaking a tcon ref when a lease break races with opening the cached directory. Processing the leak break might take a reference to the tcon in cached_dir_lease_break() and then fail to release the ref in cached_dir_offload_close, since cfid->tcon is still NULL.

INFO

Published Date :

Dec. 29, 2024, 12:15 p.m.

Last Modified :

Jan. 7, 2025, 9:53 p.m.

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

1.0
Public PoC/Exploit Available at Github

CVE-2024-56729 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2024-56729 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
References to Advisories, Solutions, and Tools

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Updated: 2 days, 4 hours ago
4 stars 1 fork 1 watcher
Born at : April 16, 2025, 1:43 p.m. This repo has been linked 280 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2024-56729 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-56729 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Jan. 07, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
    Added CWE NIST CWE-401
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1 up to (excluding) 6.6.64 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.11.11 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.12 up to (excluding) 6.12.2
    Changed Reference Type https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262 No Types Assigned https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262 Patch
    Changed Reference Type https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292 No Types Assigned https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292 Patch
    Changed Reference Type https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15 No Types Assigned https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15 Patch
    Changed Reference Type https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984d No Types Assigned https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984d Patch
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Dec. 29, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: smb: Initialize cfid->tcon before performing network ops Avoid leaking a tcon ref when a lease break races with opening the cached directory. Processing the leak break might take a reference to the tcon in cached_dir_lease_break() and then fail to release the ref in cached_dir_offload_close, since cfid->tcon is still NULL.
    Added Reference https://git.kernel.org/stable/c/1b9ab6b648f89441c8a13cb3fd8ca83ffebc5262
    Added Reference https://git.kernel.org/stable/c/4b216c8f9c7d84ef7de33ca60b97e08e03ef3292
    Added Reference https://git.kernel.org/stable/c/625e2357c8fcfae6e66dcc667dc656fe390bab15
    Added Reference https://git.kernel.org/stable/c/c353ee4fb119a2582d0e011f66a76a38f5cf984d
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-56729 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2024-56729 weaknesses.

CVSS31 - Vulnerability Scoring System
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Latest DB Update: Apr. 26, 2025 9:53