CVE-2026-31416
Analyzed
Analyzed - Analysis Complete
Netlink Header Size Miscalculation Causes Kernel WARN and Message Drop
Vulnerability report for CVE-2026-31416, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-04-13
Last updated on: 2026-05-20
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nfnetlink_log: account for netlink header size
This is a followup to an old bug fix: NLMSG_DONE needs to account
for the netlink header size, not just the attribute size.
This can result in a WARN splat + drop of the netlink message,
but other than this there are no ill effects.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | 7.0 |
| linux | linux_kernel | From 5.11 (inc) to 5.15.203 (exc) |
| linux | linux_kernel | From 6.13 (inc) to 6.18.22 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.168 (exc) |
| linux | linux_kernel | From 6.19 (inc) to 6.19.12 (exc) |
| linux | linux_kernel | From 6.7 (inc) to 6.12.81 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.6.134 (exc) |
| linux | linux_kernel | From 3.10.61 (inc) to 3.11 (exc) |
| linux | linux_kernel | From 3.12.34 (inc) to 3.13 (exc) |
| linux | linux_kernel | From 3.14.25 (inc) to 3.15 (exc) |
| linux | linux_kernel | From 3.18 (inc) to 5.10.253 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
