CVE-2026-31670
net: rfkill: prevent unlimited numbers of rfkill events from being created
Description
In the Linux kernel, the following vulnerability has been resolved: net: rfkill: prevent unlimited numbers of rfkill events from being created Userspace can create an unlimited number of rfkill events if the system is so configured, while not consuming them from the rfkill file descriptor, causing a potential out of memory situation. Prevent this from bounding the number of pending rfkill events at a "large" number (i.e. 1000) to prevent abuses like this.
INFO
Published Date :
April 24, 2026, 3:16 p.m.
Last Modified :
April 27, 2026, 8:10 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
- Apply the kernel patch to limit event creation.
- Monitor rfkill event queue size.
- Ensure userspace consumes events promptly.
Public PoC/Exploit Available at Github
CVE-2026-31670 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2026-31670.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-31670 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-2026-31670
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).
DSA and DLA for Debian last 14 days
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-31670 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-31670 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]
Apr. 27, 2026
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:2.6.31:-:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.203 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.31.1 up to (excluding) 5.10.253 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.169 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.23 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.13 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.135 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.82 Added Reference Type kernel.org: https://git.kernel.org/stable/c/4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/673d2a3eef6e0ee9736501a150c9e4024a4e60a6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/80ce4cb026f0a4c4532b6cad827b44debda6256a Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/82843afc19012a29ba863961ef494165aa1a88f4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a8c26800e0220e1550af012f5a20e50f5c78864d Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e3842779547c83150569071d9980517cc9029fc0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ea245d78dec594372e27d8c79616baf49e98a4a1 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 24, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: net: rfkill: prevent unlimited numbers of rfkill events from being created Userspace can create an unlimited number of rfkill events if the system is so configured, while not consuming them from the rfkill file descriptor, causing a potential out of memory situation. Prevent this from bounding the number of pending rfkill events at a "large" number (i.e. 1000) to prevent abuses like this. Added Reference https://git.kernel.org/stable/c/4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4 Added Reference https://git.kernel.org/stable/c/673d2a3eef6e0ee9736501a150c9e4024a4e60a6 Added Reference https://git.kernel.org/stable/c/80ce4cb026f0a4c4532b6cad827b44debda6256a Added Reference https://git.kernel.org/stable/c/82843afc19012a29ba863961ef494165aa1a88f4 Added Reference https://git.kernel.org/stable/c/a8c26800e0220e1550af012f5a20e50f5c78864d Added Reference https://git.kernel.org/stable/c/b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca Added Reference https://git.kernel.org/stable/c/e3842779547c83150569071d9980517cc9029fc0 Added Reference https://git.kernel.org/stable/c/ea245d78dec594372e27d8c79616baf49e98a4a1