{"cve":"CVE-2026-93078","nvd":{"published":"2026-09-17T17:18:01.743","modified":"2026-10-19T10:16:57.760","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/features: Reject Set Features output buffer smaller than the header\n\ncxlctl_set_feature() sizes its output buffer from the user's\nfwctl_rpc.out_len but never checks it is large enough to hold even the\nfwctl_rpc_cxl_out header. With out_len == 0 , kvzalloc() returns\nZERO_SIZE_PTR, which passes the !rpc_out check, the subsequent\nrpc_out->size = 0 then writes through the poison pointer.\n\nReject requests whose output buffer can't hold the response header,\nbefore allocating. The Set Feature reply carries no payload, so the\nheader is all that is required.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/1281dc84c81577b51e2b61c24617c9f44b2cdb99","https://git.kernel.org/stable/c/16b7c99eff030c6ea11ca24efa4b9f989cc74093","https://git.kernel.org/stable/c/cde18d6c1d913a67ab0afd3d9475ece4be79da50"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-93078","score":0.00206,"percentile":0.10627,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}