Medium severity · published May 27, 2026
CVE-2026-45850
ipvs: skip ipv6 extension headers for csum checks
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.28 before 5.10.259; 5.11 before 5.15.210; 5.16 before 6.1.176; 6.2 before 6.6.143; 6.7 before 6.12.94; 6.13 before 6.18.36; +1 more · source: NVD
LI
Linux · Linux
0bbdd42b7efa66685b6d74701bcde3a596a3a59d before 0bf92a90bf05ecafe52e92d5bc15a585021a64ac; 0bbdd42b7efa66685b6d74701bcde3a596a3a59d before 54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5; 0bbdd42b7efa66685b6d74701bcde3a596a3a59d before 768f665f3685b455ed686370ed7ccb852a125a3b; 0bbdd42b7efa66685b6d74701bcde3a596a3a59d before 9aa7edc1347b98774e5167ca34e5b8aa6083bde7; 0bbdd42b7efa66685b6d74701bcde3a596a3a59d before d643c1ec80b70508f54dac12179e36920e2c00de; 0bbdd42b7efa66685b6d74701bcde3a596a3a59d before cdce1e797addab72393c0dfee31aaca41ef7d937; +3 more · source: vendor
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45850
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45850
Patch
https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625
Patch
https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac
Patch
https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5
Patch
https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b
Patch
https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7
Patch
https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4
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