CVE-2026-45850
CVE-2026-45850 is a medium-severity vulnerability in Linux Linux Kernel with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 0% (6th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-32316
- Affected product: Linux Linux Kernel
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-45850?
- 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.
- How severe is CVE-2026-45850?
- CVE-2026-45850 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-45850 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45850?
- CVE-2026-45850 affects Linux Linux Kernel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45850?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-45850 have an EU (EUVD) identifier?
- Yes. CVE-2026-45850 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32316.
- When was CVE-2026-45850 published?
- CVE-2026-45850 was published on 2026-05-27 and last updated on 2026-06-25.
References
- https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625
- https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac
- https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5
- https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b
- https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7
- https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4
- https://git.kernel.org/stable/c/cdce1e797addab72393c0dfee31aaca41ef7d937
- https://git.kernel.org/stable/c/d643c1ec80b70508f54dac12179e36920e2c00de
Affected products (1)
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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