9.8
CRITICAL
CVSS 3.1
CVE-2026-68477
ipvs: fix more places with wrong ipv6 transport offsets
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: fix more places with wrong ipv6 transport offsets Sashiko reports for more incorrect IPv6 transport offsets. The app code for TCP was assuming IPv4 network header even after the ipvsh argument was provided. This can cause problems with apps over IPv6. As for the only official app in the kernel tree (FTP) this problem is harmless because we use Netfilter to mangle the FTP ports and we do not adjust the TCP seq numbers. Also, provide correct offset of the ICMPV6 header in ip_vs_out_icmp_v6() for correct checksum checks when the IPv6 packet has extension headers.
Details
INFO
Published Date :
Aug. 15, 2026, 6:20 a.m.
Last Modified :
Aug. 17, 2026, 6:17 a.m.
Remotely Exploit :
Yes !
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 | CRITICAL | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Update the Linux kernel to resolve incorrect IPv6 transport offsets and header calculations.
- Update the Linux kernel.
- Verify IPVS and IPv6 configurations.
- Test IPv6 application compatibility.
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-2026-68477.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68477 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-2026-68477
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-2026-68477 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68477 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:N/AC:L/PR:N/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': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '613ce63711b8d431bba90781f133c39a21684f87', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '95d4511d81b2b37e5d2bdde5d912e48243eae517', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '3a9dc9b55b53d94613a587604b77d3b20024090c', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'a3f0d5b605cd5da5c95279969fb8cea4e55cee5b', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '7350eb7ead172ae8024897d4b0f2e15c5318279c', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'd4ec18f48ce78a3bf7c999ac908691007375fe99', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '905d7a363ade96a19f214815361e11981142c547', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'b3fe4cbd583895987935a9bdad01c8f9d3a02310', 'versionType': 'git'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_app.c', 'net/netfilter/ipvs/ip_vs_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.28'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.28', '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-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_app.c', 'net/netfilter/ipvs/ip_vs_core.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '613ce63711b8d431bba90781f133c39a21684f87', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '95d4511d81b2b37e5d2bdde5d912e48243eae517', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '3a9dc9b55b53d94613a587604b77d3b20024090c', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'a3f0d5b605cd5da5c95279969fb8cea4e55cee5b', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '7350eb7ead172ae8024897d4b0f2e15c5318279c', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'd4ec18f48ce78a3bf7c999ac908691007375fe99', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '905d7a363ade96a19f214815361e11981142c547', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'b3fe4cbd583895987935a9bdad01c8f9d3a02310', 'versionType': 'git'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_app.c', 'net/netfilter/ipvs/ip_vs_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.28'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.28', '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/ipvs/ip_vs_app.c', 'net/netfilter/ipvs/ip_vs_core.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': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '613ce63711b8d431bba90781f133c39a21684f87', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '95d4511d81b2b37e5d2bdde5d912e48243eae517', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '3a9dc9b55b53d94613a587604b77d3b20024090c', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'a3f0d5b605cd5da5c95279969fb8cea4e55cee5b', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '7350eb7ead172ae8024897d4b0f2e15c5318279c', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'd4ec18f48ce78a3bf7c999ac908691007375fe99', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': '905d7a363ade96a19f214815361e11981142c547', 'versionType': 'git'}, {'status': 'affected', 'version': '2a3b791e6e1169f374224d164738e9f7be703d77', 'lessThan': 'b3fe4cbd583895987935a9bdad01c8f9d3a02310', 'versionType': 'git'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_app.c', 'net/netfilter/ipvs/ip_vs_core.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.28'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.28', '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-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_app.c', 'net/netfilter/ipvs/ip_vs_core.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: ipvs: fix more places with wrong ipv6 transport offsets Sashiko reports for more incorrect IPv6 transport offsets. The app code for TCP was assuming IPv4 network header even after the ipvsh argument was provided. This can cause problems with apps over IPv6. As for the only official app in the kernel tree (FTP) this problem is harmless because we use Netfilter to mangle the FTP ports and we do not adjust the TCP seq numbers. Also, provide correct offset of the ICMPV6 header in ip_vs_out_icmp_v6() for correct checksum checks when the IPv6 packet has extension headers. Added Reference https://git.kernel.org/stable/c/3a9dc9b55b53d94613a587604b77d3b20024090c Added Reference https://git.kernel.org/stable/c/613ce63711b8d431bba90781f133c39a21684f87 Added Reference https://git.kernel.org/stable/c/7350eb7ead172ae8024897d4b0f2e15c5318279c Added Reference https://git.kernel.org/stable/c/905d7a363ade96a19f214815361e11981142c547 Added Reference https://git.kernel.org/stable/c/95d4511d81b2b37e5d2bdde5d912e48243eae517 Added Reference https://git.kernel.org/stable/c/a3f0d5b605cd5da5c95279969fb8cea4e55cee5b Added Reference https://git.kernel.org/stable/c/b3fe4cbd583895987935a9bdad01c8f9d3a02310 Added Reference https://git.kernel.org/stable/c/d4ec18f48ce78a3bf7c999ac908691007375fe99
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.