CVE-2025-21761
Openvswitch RCU Protection Use-After-Free Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() ovs_vport_cmd_fill_info() can be called without RTNL or RCU. Use RCU protection and dev_net_rcu() to avoid potential UAF.
INFO
Published Date :
Feb. 27, 2025, 3:15 a.m.
Last Modified :
March 24, 2025, 5:46 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
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-2025-21761.
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-2025-21761 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-21761 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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Initial Analysis by [email protected]
Mar. 24, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.13.4 *cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.79 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.179 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.15 up to (excluding) 5.4.291 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.235 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.129 Added Reference Type kernel.org: https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 13, 2025
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11 Added Reference https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1 Added Reference https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 27, 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-416 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 27, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: openvswitch: use RCU protection in ovs_vport_cmd_fill_info() ovs_vport_cmd_fill_info() can be called without RTNL or RCU. Use RCU protection and dev_net_rcu() to avoid potential UAF. Added Reference https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0 Added Reference https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da Added Reference https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074 Added Reference https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d Added Reference https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21761 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-2025-21761
weaknesses.