7.8
HIGH
CVSS 3.1
CVE-2026-72434
netfilter: ipset: make sure gc is properly stopped
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: make sure gc is properly stopped Sashiko noticed that when destroying a set, cancel_delayed_work_sync() was called while gc calls queue_delayed_work() unconditionally which can lead not to properly shutting down the gc.
Details
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:19 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 garbage collection is properly stopped during set destruction to prevent race conditions.
- Apply the netfilter ipset fix for proper garbage collection shutdown.
- Ensure delayed work is cancelled before queueing new work.
- Review synchronization mechanisms for delayed work.
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-2026-72434.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72434 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-2026-72434
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-2026-72434 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72434 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': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': 'c940d1b96248c3081b664ede5418078bdc7c8c07', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': '12088da6add5b003657c8506c5b0fcef835083b8', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': 'c78bd5195a5998094a5866df702fbeafda60dafb', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': '4a597a87e2e2f608edb6be2c510dc826b4fdfb53', 'versionType': 'git'}, {'status': 'affected', 'version': '5dd9488ae41070b69d2f4acb580f77db5705f9ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'a469bab3386aebff33c59506f3a95e35b91118fd', 'versionType': 'git'}, {'status': 'affected', 'version': '5.4.24', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.5.8', 'lessThan': '5.6', 'versionType': 'semver'}], 'programFiles': ['net/netfilter/ipset/ip_set_hash_gen.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'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': ['net/netfilter/ipset/ip_set_hash_gen.h'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': 'c940d1b96248c3081b664ede5418078bdc7c8c07', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': '12088da6add5b003657c8506c5b0fcef835083b8', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': 'c78bd5195a5998094a5866df702fbeafda60dafb', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': '4a597a87e2e2f608edb6be2c510dc826b4fdfb53', 'versionType': 'git'}, {'status': 'affected', 'version': '5dd9488ae41070b69d2f4acb580f77db5705f9ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'a469bab3386aebff33c59506f3a95e35b91118fd', 'versionType': 'git'}, {'status': 'affected', 'version': '5.4.24', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.5.8', 'lessThan': '5.6', 'versionType': 'semver'}], 'programFiles': ['net/netfilter/ipset/ip_set_hash_gen.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'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': ['net/netfilter/ipset/ip_set_hash_gen.h'], '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': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': 'c940d1b96248c3081b664ede5418078bdc7c8c07', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': '12088da6add5b003657c8506c5b0fcef835083b8', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': 'c78bd5195a5998094a5866df702fbeafda60dafb', 'versionType': 'git'}, {'status': 'affected', 'version': 'f66ee0410b1c3481ee75e5db9b34547b4d582465', 'lessThan': '4a597a87e2e2f608edb6be2c510dc826b4fdfb53', 'versionType': 'git'}, {'status': 'affected', 'version': '5dd9488ae41070b69d2f4acb580f77db5705f9ca', 'versionType': 'git'}, {'status': 'affected', 'version': 'a469bab3386aebff33c59506f3a95e35b91118fd', 'versionType': 'git'}, {'status': 'affected', 'version': '5.4.24', 'lessThan': '5.5', 'versionType': 'semver'}, {'status': 'affected', 'version': '5.5.8', 'lessThan': '5.6', 'versionType': 'semver'}], 'programFiles': ['net/netfilter/ipset/ip_set_hash_gen.h'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.6'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.6', 'versionType': 'semver'}, {'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': ['net/netfilter/ipset/ip_set_hash_gen.h'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: netfilter: ipset: make sure gc is properly stopped Sashiko noticed that when destroying a set, cancel_delayed_work_sync() was called while gc calls queue_delayed_work() unconditionally which can lead not to properly shutting down the gc. Added Reference https://git.kernel.org/stable/c/12088da6add5b003657c8506c5b0fcef835083b8 Added Reference https://git.kernel.org/stable/c/4a597a87e2e2f608edb6be2c510dc826b4fdfb53 Added Reference https://git.kernel.org/stable/c/c78bd5195a5998094a5866df702fbeafda60dafb Added Reference https://git.kernel.org/stable/c/c940d1b96248c3081b664ede5418078bdc7c8c07
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.