7.8
HIGH
CVSS 3.1
CVE-2026-72109
net: sparx5: unregister blocking notifier on init failure
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: unregister blocking notifier on init failure sparx5_register_notifier_blocks() registers the switchdev blocking notifier before allocating the ordered workqueue. If the workqueue allocation fails, the error path unregisters the switchdev and netdevice notifiers, but leaves the blocking notifier registered. Add a separate error label for the workqueue allocation failure path and unregister the switchdev blocking notifier there.
Details
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
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 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Ensure switchdev blocking notifier is unregistered on workqueue allocation failure.
- Ensure notifier unregistration on workqueue allocation failure.
- Apply kernel patches that address this issue.
References
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-2026-72109.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72109 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-2026-72109
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-2026-72109 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72109 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
Aug. 17, 2026
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 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'fbc65b17508ed5464b7106e7fa5f15251ca1b603', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'cf419c869e0d03aad4b6f4ecf0a813851930dfe7', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'd6084c47389fd6978a5d66b0d58206a548c792a9', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '8a3c44a003176282ee4306b7c96e5a536c6f0707', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '17f113e7b622dc850992ade540181717de6a8561', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '483be61b4a9a6df3b7cb277e8f189e082dee4cb8', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'fbc65b17508ed5464b7106e7fa5f15251ca1b603', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'cf419c869e0d03aad4b6f4ecf0a813851930dfe7', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'd6084c47389fd6978a5d66b0d58206a548c792a9', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '8a3c44a003176282ee4306b7c96e5a536c6f0707', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '17f113e7b622dc850992ade540181717de6a8561', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '483be61b4a9a6df3b7cb277e8f189e082dee4cb8', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'fbc65b17508ed5464b7106e7fa5f15251ca1b603', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'cf419c869e0d03aad4b6f4ecf0a813851930dfe7', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': 'd6084c47389fd6978a5d66b0d58206a548c792a9', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '8a3c44a003176282ee4306b7c96e5a536c6f0707', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '17f113e7b622dc850992ade540181717de6a8561', 'versionType': 'git'}, {'status': 'affected', 'version': 'd6fce5141929697a27f029c633433d487f6f62cb', 'lessThan': '483be61b4a9a6df3b7cb277e8f189e082dee4cb8', 'versionType': 'git'}], 'programFiles': ['drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: net: sparx5: unregister blocking notifier on init failure sparx5_register_notifier_blocks() registers the switchdev blocking notifier before allocating the ordered workqueue. If the workqueue allocation fails, the error path unregisters the switchdev and netdevice notifiers, but leaves the blocking notifier registered. Add a separate error label for the workqueue allocation failure path and unregister the switchdev blocking notifier there. Added Reference https://git.kernel.org/stable/c/17f113e7b622dc850992ade540181717de6a8561 Added Reference https://git.kernel.org/stable/c/483be61b4a9a6df3b7cb277e8f189e082dee4cb8 Added Reference https://git.kernel.org/stable/c/8a3c44a003176282ee4306b7c96e5a536c6f0707 Added Reference https://git.kernel.org/stable/c/cf419c869e0d03aad4b6f4ecf0a813851930dfe7 Added Reference https://git.kernel.org/stable/c/d6084c47389fd6978a5d66b0d58206a548c792a9 Added Reference https://git.kernel.org/stable/c/e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3 Added Reference https://git.kernel.org/stable/c/fbc65b17508ed5464b7106e7fa5f15251ca1b603
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.