CVE-2026-80584 evidence review

Linux

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: validate user buffer length in SNMP and ARP query ioctls qeth_snmp_command() and qeth_l3_arp_query() allocate a buffer sized by a user-supplied length (udata_len) without checking a lower bound, then set udata_offset to a fixed non-zero value and pass both to a reply callback. The callback bounds-checks the copy with if ((udata_len - udata_offset) < len) Both fields are u32, so a udata_len smaller than udata_offset makes the subtraction wrap and the check pass, and the following memcpy() writes past the allocatio...

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Evidence review

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.

ProductLinux

Affected versions>= 4a71df50047f0db65ea09b1be155852e81a45eba < 9d00eeb2d27f4cc817c5e408760226d43f811ec6, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 46443eaddebd84c51940857b11787229be169dec, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 91935843f9396a9e45253e2c0d4337ca1371754b, >= 4a71df50047f0db65ea09b1be155852e81a45eba < cc423f4105fe145b33e1d7cad34245a798358f73, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 3083818e67bcd656965797fbac9a3d6c1d44f78a, >= 4a71df50047f0db65ea09b1be155852e81a45eba < a3083647747942ea32faf14560d6397ff3068046, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 75fb3151513d7d9f77a8f9545418279b119c06b8, >= 4a71df50047f0db65ea09b1be155852e81a45eba < d141f087b1af656f055d7c5793a3e87817ba0bbe, >= 2.6.26

Fixed versionsNo verified fixed-version field is available yet

Priority basisReview · CVSS 8.4 · EPSS -

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: >= 4a71df50047f0db65ea09b1be155852e81a45eba < 9d00eeb2d27f4cc817c5e408760226d43f811ec6, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 46443eaddebd84c51940857b11787229be169dec, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 91935843f9396a9e45253e2c0d4337ca1371754b, >= 4a71df50047f0db65ea09b1be155852e81a45eba < cc423f4105fe145b33e1d7cad34245a798358f73, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 3083818e67bcd656965797fbac9a3d6c1d44f78a, >= 4a71df50047f0db65ea09b1be155852e81a45eba < a3083647747942ea32faf14560d6397ff3068046, >= 4a71df50047f0db65ea09b1be155852e81a45eba < 75fb3151513d7d9f77a8f9545418279b119c06b8, >= 4a71df50047f0db65ea09b1be155852e81a45eba < d141f087b1af656f055d7c5793a3e87817ba0bbe, >= 2.6.26. 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.