CVE-2026-45850: linux
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-45850DEBIAN-CVE-2026-45850CGA-2f3m-cwxv-v59mCGA-75rc-2rvg-fch9CGA-7frv-j8w8-6p35CGA-7v6v-82rc-p7fwCGA-8mmc-7rcx-f32vCGA-8wx3-7j38-cxv5CGA-hmph-7vff-cghmCGA-q2c7-2pmr-p6h9CGA-q9vq-5hvr-5x8gCGA-qfv6-h383-296rCGA-qww9-fq97-jh6qCGA-rpj7-9c6c-pq3rCGA-v95g-9gxc-7458
Published 27-05-2026Last modified 15-10-2026
Vulnerability summary
CVE-2026-45850 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.2% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 13 · Related 14Timeline
- 27-05-2026PublishedVulnerability first disclosed.
- 15-10-2026Last modifiedVulnerability information updated.
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 metrics
4 scores · 3 sources · 2 versionsHigh 8.8Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:NSourcesSingle source
Medium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.16%
Chance of exploitation in the next 30 days
Percentile
5%
Versus all other CVEs
30-day change
0.00 pp
From 0.16% on 19-09-2026
19-09-202619-10-2026
EPSS score0.16%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Ubuntu158 products
- linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-146.146
- linux-allwinner-5.19All versions (No fix recorded)
- linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1066.69
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Chainguard13 products
- linux-aws-6.12< 6.12.95-r0
- linux-aws-6.18< 6.18.38-r0
- linux-azure-6.12< 6.12.95-r0
- linux-azure-6.18< 6.18.38-r0
- linux-gcp-6.12< 6.12.95-r0
Linux2 products
- linux≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < 0bf92a90bf05ecafe52e92d5bc15a585021a64ac | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < 54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5 | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < 768f665f3685b455ed686370ed7ccb852a125a3b | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < 9aa7edc1347b98774e5167ca34e5b8aa6083bde7 | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < d643c1ec80b70508f54dac12179e36920e2c00de | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < cdce1e797addab72393c0dfee31aaca41ef7d937 | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4 | ≥ 0bbdd42b7efa66685b6d74701bcde3a596a3a59d, < 05cfe9863ef049d98141dc2969eefde72fb07625 | 2.6.28
- linux_kernel≥ 2.6.28, < 5.10.259 | ≥ 5.11, < 5.15.210 | ≥ 5.16, < 6.1.176 | ≥ 6.2, < 6.6.143 | ≥ 6.7, < 6.12.94 | ≥ 6.13, < 6.18.36 | ≥ 6.19, < 6.19.4
Debian1 product
- linux< 6.1.176-1 | < 6.12.94-1 | < 6.19.6-1
4 vendors · 174 products
