7.0
HIGH
CVE-2024-50086
"InfiniBand Open-Ethercat-Device ( ksmbd ) - Improper Free Reference"
Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used.

INFO

Published Date :

Oct. 29, 2024, 1:15 a.m.

Last Modified :

Nov. 8, 2024, 4:15 p.m.

Source :

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

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.0
Affected Products

The following products are affected by CVE-2024-50086 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

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).

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

The following list is the news that have been mention CVE-2024-50086 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2024-50086 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.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Nov. 08, 2024

    Action Type Old Value New Value
    Added Reference kernel.org https://git.kernel.org/stable/c/0f62358ce85b2d4c949ef1b648be01b29cec667a [No types assigned]
  • Initial Analysis by [email protected]

    Oct. 30, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08 No Types Assigned https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08 Patch
    Changed Reference Type https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930 No Types Assigned https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930 Patch
    Changed Reference Type https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c No Types Assigned https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c Patch
    Changed Reference Type https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d No Types Assigned https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d Patch
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.1.114 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.58 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.11.5 *cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Oct. 29, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used.
    Added Reference kernel.org https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930 [No types assigned]
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-2024-50086 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-2024-50086 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability