CVE-2024-40921
net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state
Description
In the Linux kernel, the following vulnerability has been resolved: net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state Pass the already obtained vlan group pointer to br_mst_vlan_set_state() instead of dereferencing it again. Each caller has already correctly dereferenced it for their context. This change is required for the following suspicious RCU dereference fix. No functional changes intended.
INFO
Published Date :
July 12, 2024, 1:15 p.m.
Last Modified :
Nov. 3, 2025, 10:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel packages.
- Update all affected packages.
- Reboot the system after the update.
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-2024-40921.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-40921 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-2024-40921
weaknesses.
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-2024-40921 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-40921 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.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 03, 2025
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html -
Initial Analysis by [email protected]
Sep. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.10:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.10:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.8.12 up to (excluding) 6.9 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.1.93 up to (excluding) 6.1.95 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.6.33 up to (excluding) 6.6.35 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.9.3 up to (excluding) 6.9.6 Added Reference Type CVE: https://git.kernel.org/stable/c/09f4337c27f5bdeb8646a6db91488cc2f7d537ff Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/09f4337c27f5bdeb8646a6db91488cc2f7d537ff Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509 Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca Types: Patch Added Reference Type CVE: https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5 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/09f4337c27f5bdeb8646a6db91488cc2f7d537ff Added Reference https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509 Added Reference https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca Added Reference https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 12, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: bridge: mst: pass vlan group directly to br_mst_vlan_set_state Pass the already obtained vlan group pointer to br_mst_vlan_set_state() instead of dereferencing it again. Each caller has already correctly dereferenced it for their context. This change is required for the following suspicious RCU dereference fix. No functional changes intended. Added Reference kernel.org https://git.kernel.org/stable/c/09f4337c27f5bdeb8646a6db91488cc2f7d537ff [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a6cc9e9a651b9861efa068c164ee62dfba68c6ca [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d2dc02775fc0c4eacaee833a0637e5958884a8e5 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/36c92936e868601fa1f43da6758cf55805043509 [No types assigned]