0.0
NA
CVE-2026-72349
netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt()
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt() On links faster than ~34 Gbps, where byte rate may exceed 2^32-1 (~ 4.3 GBps), the comparison result becomes incorrect because the truncated value no longer reflects the actual estimator rate. Fix by changing the local variables to u64.
Details
INFO
Published Date :
Aug. 15, 2026, 6:22 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Update the Linux kernel to resolve a rate estimation truncation issue.
- Apply the latest Linux kernel updates.
- Ensure all affected systems are patched.
- Verify rate estimation logic post-update.
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-2026-72349.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72349 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-2026-72349
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-2026-72349 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72349 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 Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '77e9ba358d63fe2eb03c90d29ea85651d95cf2e6', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'a3ba938f45cb00f6bf49d3aa3647df9b017f5f08', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'bab305dd769d78074adca73505cc2509e1206bf2', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '5da915fc159c6b4091669447588e520183969cca', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'd5cc4c12a4b90bf099199c3c49ecda7e694f2a2b', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'e702f6dd5d21e331f55fd9168c0210542008546d', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '905a927b2e6fec7b174e9e5644d271047b61378f', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '444853cd438201007da5359821adcc2995655ab1', 'versionType': 'git'}], 'programFiles': ['net/netfilter/xt_rateest.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'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-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/xt_rateest.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '77e9ba358d63fe2eb03c90d29ea85651d95cf2e6', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'a3ba938f45cb00f6bf49d3aa3647df9b017f5f08', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'bab305dd769d78074adca73505cc2509e1206bf2', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '5da915fc159c6b4091669447588e520183969cca', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'd5cc4c12a4b90bf099199c3c49ecda7e694f2a2b', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'e702f6dd5d21e331f55fd9168c0210542008546d', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '905a927b2e6fec7b174e9e5644d271047b61378f', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '444853cd438201007da5359821adcc2995655ab1', 'versionType': 'git'}], 'programFiles': ['net/netfilter/xt_rateest.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'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': ['net/netfilter/xt_rateest.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': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '77e9ba358d63fe2eb03c90d29ea85651d95cf2e6', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'a3ba938f45cb00f6bf49d3aa3647df9b017f5f08', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'bab305dd769d78074adca73505cc2509e1206bf2', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '5da915fc159c6b4091669447588e520183969cca', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'd5cc4c12a4b90bf099199c3c49ecda7e694f2a2b', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': 'e702f6dd5d21e331f55fd9168c0210542008546d', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '905a927b2e6fec7b174e9e5644d271047b61378f', 'versionType': 'git'}, {'status': 'affected', 'version': '1c0d32fde5bdf1184bc274f864c09799278a1114', 'lessThan': '444853cd438201007da5359821adcc2995655ab1', 'versionType': 'git'}], 'programFiles': ['net/netfilter/xt_rateest.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '4.10'}, {'status': 'unaffected', 'version': '0', 'lessThan': '4.10', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'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-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/xt_rateest.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_rateest: fix u64 truncation in xt_rateest_mt() On links faster than ~34 Gbps, where byte rate may exceed 2^32-1 (~ 4.3 GBps), the comparison result becomes incorrect because the truncated value no longer reflects the actual estimator rate. Fix by changing the local variables to u64. Added Reference https://git.kernel.org/stable/c/444853cd438201007da5359821adcc2995655ab1 Added Reference https://git.kernel.org/stable/c/5da915fc159c6b4091669447588e520183969cca Added Reference https://git.kernel.org/stable/c/77e9ba358d63fe2eb03c90d29ea85651d95cf2e6 Added Reference https://git.kernel.org/stable/c/905a927b2e6fec7b174e9e5644d271047b61378f Added Reference https://git.kernel.org/stable/c/a3ba938f45cb00f6bf49d3aa3647df9b017f5f08 Added Reference https://git.kernel.org/stable/c/bab305dd769d78074adca73505cc2509e1206bf2 Added Reference https://git.kernel.org/stable/c/d5cc4c12a4b90bf099199c3c49ecda7e694f2a2b Added Reference https://git.kernel.org/stable/c/e702f6dd5d21e331f55fd9168c0210542008546d
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.