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7.8
HIGH CVSS 3.1
CVE-2024-26936
ksmbd: validate request buffer size in smb2_allocate_rsp_buf()
Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate request buffer size in smb2_allocate_rsp_buf() The response buffer should be allocated in smb2_allocate_rsp_buf before validating request. But the fields in payload as well as smb2 header is used in smb2_allocate_rsp_buf(). This patch add simple buffer size validation to avoid potencial out-of-bounds in request buffer.

INFO

Published Date :

May 1, 2024, 6:15 a.m.

Last Modified :

Sept. 18, 2025, 2:19 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2024-26936 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
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
A vulnerability in the kernel requires updating the kernel package to remediate.
  • Update the affected kernel package.
  • Reboot the system if required.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2024-26936.

URL Resource
https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a Patch
https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674 Patch
https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6 Patch
https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11 Patch
https://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99 Patch
https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a Patch
https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674 Patch
https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6 Patch
https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11 Patch
https://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99 Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2024-26936 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-2024-26936 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers

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-2024-26936 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2024-26936 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]

    Sep. 18, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-120
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.9:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.8.8 *cpe:2.3:o:linux:linux_kernel:6.9:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.9:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.88 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.15 up to (excluding) 5.15.159 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.29 *cpe:2.3:o:linux:linux_kernel:6.9:rc5:*:*:*:*:*:*
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99 Types: Patch
    Added Reference Type CVE: https://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99 Types: Patch
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a
    Added Reference https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674
    Added Reference https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6
    Added Reference https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11
    Added Reference https://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 29, 2024

    Action Type Old Value New Value
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 17, 2024

    Action Type Old Value New Value
    Added Reference kernel.org https://git.kernel.org/stable/c/8f3d0bf1d0c62b539d54c5b9108a845cff619b99 [No types assigned]
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 01, 2024

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate request buffer size in smb2_allocate_rsp_buf() The response buffer should be allocated in smb2_allocate_rsp_buf before validating request. But the fields in payload as well as smb2 header is used in smb2_allocate_rsp_buf(). This patch add simple buffer size validation to avoid potencial out-of-bounds in request buffer.
    Added Reference kernel.org https://git.kernel.org/stable/c/21ff9d7d223c5c19cb4334009e4c0c83a2f4d674 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/5c20b242d4fed73a93591e48bfd9772e2322fb11 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/2c27a64a2bc47d9bfc7c3cf8be14be53b1ee7cb6 [No types assigned]
    Added Reference kernel.org https://git.kernel.org/stable/c/17cf0c2794bdb6f39671265aa18aea5c22ee8c4a [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.
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact