CVE-2026-93078

CVE CVE-2026-93078EUVD EUVD-2026-82188Published 2026-09-17T16:10:59.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: cxl/features: Reject Set Features output buffer smaller than the header cxlctl_set_feature() sizes its output buffer from the user's fwctl_rpc.out_len but never checks it is large enough to hold even the fwctl_rpc_cxl_out header. With out_len == 0 , kvzalloc() returns ZERO_SIZE_PTR, which passes the !rpc_out check, the subsequent rpc_out->size = 0 then writes through the poison pointer. Reject requests whose output buffer can't hold the response header, before allocating. The Set Feature reply carries no payload, so the header is all that is required.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

• Linux — Linux 6.15; patch: 0; eb5dfcb9e36d0e46089fec777d911313c1876fa3 <16b7c99eff030c6ea11ca24efa4b9f989cc74093; patch: 6.18.52; eb5dfcb9e36d0e46089fec777d911313c1876fa3 <cde18d6c1d913a67ab0afd3d9475ece4be79da50; eb5dfcb9e36d0e46089fec777d911313c1876fa3 <1281dc84c81577b51e2b61c24617c9f44b2cdb99; patch: 7.2.6; patch: 7.3-rc1

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

• Linux — Linux

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.