CVE-2026-80640

CVE CVE-2026-80640EUVD EUVD-2026-67516Published 2026-08-28T06:48:52.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: cxl/fwctl: Fix __fortify_panic Fix a runtime assertion in cxlctl_get_supported_features(). Fortify complains that it is potentially overflowing the entries array per __counted_by_le(num_entries). Quiet the false positive by initializing @num_entries earlier. memcpy: detected buffer overflow: 48 byte write of buffer size 0 WARNING: lib/string_helpers.c:1036 at __fortify_report+0x4d/0xa0, CPU#7: fwctl/1398 RIP: 0010:__fortify_report+0x50/0xa0 Call Trace: __fortify_panic+0xd/0xf cxlctl_get_supported_features.cold+0x23/0x35 [cxl_core]

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: 7.1.5; patch: 0; patch: 6.18.40; 4d1c09cef2c244bd19467c016a3e56ba28ecc59d <18c67ecc5dafe14055edcea53f36f4e31df1816b; 4d1c09cef2c244bd19467c016a3e56ba28ecc59d <b8d15e85596ad8993d42e0703a9741961a2f03eb; patch: 7.2; 4d1c09cef2c244bd19467c016a3e56ba28ecc59d <6c9d2e87df40d606f1c85143e9acb1ecff463d5e

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

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