5.5
MEDIUM
CVSS 3.1
CVE-2026-45850
ipvs: skip ipv6 extension headers for csum checks
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.
Details
INFO
Published Date :
May 27, 2026, 2:16 p.m.
Last Modified :
June 25, 2026, 9:03 p.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 | MEDIUM | [email protected] |
Solution
Update the Linux kernel to resolve IPv6 extension header checksum validation failures.
- Apply the Linux kernel update.
- Verify checksum validation for IPv6 extension headers.
- Test network connectivity after the 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-2026-45850.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45850 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-2026-45850
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-2026-45850 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45850 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.
-
Initial Analysis by [email protected]
Jun. 25, 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:*:*:*:*:*:*:*:* versions from (including) 6.19 up to (excluding) 6.19.4 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 6.1.176 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.6.143 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.210 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 2.6.28 up to (excluding) 5.10.259 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 up to (excluding) 6.18.36 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.12.94 Added Reference Type kernel.org: https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cdce1e797addab72393c0dfee31aaca41ef7d937 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d643c1ec80b70508f54dac12179e36920e2c00de Types: Patch -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 19, 2026
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac Added Reference https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5 Added Reference https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b Added Reference https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7 Added Reference https://git.kernel.org/stable/c/cdce1e797addab72393c0dfee31aaca41ef7d937 Added Reference https://git.kernel.org/stable/c/d643c1ec80b70508f54dac12179e36920e2c00de Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': 'a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '05cfe9863ef049d98141dc2969eefde72fb07625', 'versionType': 'git'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_proto_sctp.c', 'net/netfilter/ipvs/ip_vs_proto_tcp.c', 'net/netfilter/ipvs/ip_vs_proto_udp.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': '6.19.4', 'versionType': 'semver', 'lessThanOrEqual': '6.19.*'}, {'status': 'unaffected', 'version': '7.0', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_proto_sctp.c', 'net/netfilter/ipvs/ip_vs_proto_tcp.c', 'net/netfilter/ipvs/ip_vs_proto_udp.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '0bf92a90bf05ecafe52e92d5bc15a585021a64ac', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '768f665f3685b455ed686370ed7ccb852a125a3b', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '9aa7edc1347b98774e5167ca34e5b8aa6083bde7', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': 'd643c1ec80b70508f54dac12179e36920e2c00de', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': 'cdce1e797addab72393c0dfee31aaca41ef7d937', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': 'a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '05cfe9863ef049d98141dc2969eefde72fb07625', 'versionType': 'git'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_proto_sctp.c', 'net/netfilter/ipvs/ip_vs_proto_tcp.c', 'net/netfilter/ipvs/ip_vs_proto_udp.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': '5.10.259', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.143', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.94', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.36', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '6.19.4', 'versionType': 'semver', 'lessThanOrEqual': '6.19.*'}, {'status': 'unaffected', 'version': '7.0', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_proto_sctp.c', 'net/netfilter/ipvs/ip_vs_proto_tcp.c', 'net/netfilter/ipvs/ip_vs_proto_udp.c'], 'defaultStatus': 'affected'}] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 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': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': 'a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4', 'versionType': 'git'}, {'status': 'affected', 'version': '0bbdd42b7efa66685b6d74701bcde3a596a3a59d', 'lessThan': '05cfe9863ef049d98141dc2969eefde72fb07625', 'versionType': 'git'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_proto_sctp.c', 'net/netfilter/ipvs/ip_vs_proto_tcp.c', 'net/netfilter/ipvs/ip_vs_proto_udp.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': '6.19.4', 'versionType': 'semver', 'lessThanOrEqual': '6.19.*'}, {'status': 'unaffected', 'version': '7.0', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/netfilter/ipvs/ip_vs_proto_sctp.c', 'net/netfilter/ipvs/ip_vs_proto_tcp.c', 'net/netfilter/ipvs/ip_vs_proto_udp.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 27, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem. Added Reference https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625 Added Reference https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4
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.