CVE-2026-74744 evidence review
Linux
In the Linux kernel, the following vulnerability has been resolved: ipvlan: inherit needed_headroom and needed_tailroom from phy_dev ipvlan devices inherit hard_header_len from phy_dev during ipvlan_init(), but leave needed_headroom and needed_tailroom set to 0. When the underlying phy_dev (or stacked lower device) requires extra headroom or tailroom for headers/trailers (e.g. macsec, ipsec, wireguard, tunnels, or veth with rx headroom), upper layers calculating packet headroom and tailroom fail to reserve sufficient space. This can result in reallocation overhead, skb headroom underflows,...
This record remains available for product and version identification, but it is not presented as a complete remediation procedure. Confirm the affected range and the supported fix in a direct vendor advisory before changing production systems.
Identify the product and installed version
Record whether Linux is present, where it is installed, and which interfaces are exposed.
- Record the product name, package or appliance identifier, and installed version.
- Identify internet-facing, administrative, API, and internal access paths.
- Preserve the pre-change configuration and relevant service logs.
Compare the affected range
Use the current record as an identification aid: >= 2ad7bf3638411cb547f2823df08166c13ab04269 < af602c4d0ee548da18e2409b4b4da1079625a372, >= 2ad7bf3638411cb547f2823df08166c13ab04269 < f3c17ff65f54781cde696e16a6c577615ed735aa, >= 2ad7bf3638411cb547f2823df08166c13ab04269 < c0fbe31f6b20ade0465130685859faa5c86fda59, >= 2ad7bf3638411cb547f2823df08166c13ab04269 < 5f33188457bbcc1b11ca87084037963c516ed3d9, >= 2ad7bf3638411cb547f2823df08166c13ab04269 < 5c2ca77212eb38559b0353b8363b7a84f4b019dd, >= 2ad7bf3638411cb547f2823df08166c13ab04269 < e16e960d55a40d36bd7c2494cc005e757dc9a1ef, >= 3.19. Resolve incomplete inventory results before deciding that an asset is unaffected.
Verify the authoritative remediation source
Open the linked source material and locate a direct vendor advisory for this CVE. Confirm the supported fixed release and product-specific update path before making a production change.
Operational boundary
This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.