{"cve":"CVE-2026-99124","nvd":{"published":"2026-10-28T11:17:32.077","modified":"2026-10-28T11:17:32.077","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pci: Fix leak of uninitialized kernel data in SCLP report\n\nWhile report_error_write() checks that the provided buffer is at least\nas large as the header struct, but not that it is large enough to\ncontain the report with the length claimed by report->length. If\nuser-space provides a short buffer, meaning a larger report->length than\nthe actually written payload, up to around 4K of kernel data from past\nthe kmalloc(len + 1) sized buffer allocated in kernfs_fop_write_iter()\nwill leak into the SCLP report.\n\nHowever, as the entity processing the SCLP is privileged and able to\naccess at least the page including the report, this does not leak data\nthat entity could not access but it is still an out of bounds read and\na malformed error report that should be rejected.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/126a7c227d8543e13903dd5622640c1f0fcc5a16","https://git.kernel.org/stable/c/8ac60ae2a307a50b599bf5d300b448d638f3ba29","https://git.kernel.org/stable/c/ba5001db9bb23ff7d2ea328c405c287ffb07786f"],"products":[],"source":"nvd","synced_at":"2026-10-28T11:37:51.394563875+00:00"},"epss":null,"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."]}