{"cve":"CVE-2024-46794","nvd":{"published":"2024-09-18T08:15:06.230","modified":"2026-06-17T07:55:56.870","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nx86/tdx: Fix data leak in mmio_read()\n\nThe mmio_read() function makes a TDVMCALL to retrieve MMIO data for an\naddress from the VMM.\n\nSean noticed that mmio_read() unintentionally exposes the value of an\ninitialized variable (val) on the stack to the VMM.\n\nThis variable is only needed as an output value. It did not need to be\npassed to the VMM in the first place.\n\nDo not send the original value of *val to the VMM.\n\n[ dhansen: clarify what 'val' is used for. ]","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":3.3},"cwes":[],"references":["https://git.kernel.org/stable/c/26c6af49d26ffc377e392e30d4086db19eed0ef7","https://git.kernel.org/stable/c/b55ce742afcb8e8189d82f2f1e635ba1b5a461fa","https://git.kernel.org/stable/c/b6fb565a2d15277896583d471b21bc14a0c99661","https://git.kernel.org/stable/c/ef00818c50cf55a3a56bd9a9fae867c92dfb84e7","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:54:38.012257375+00:00"},"epss":{"cve":"CVE-2024-46794","score":0.00197,"percentile":0.09511,"date":"2026-11-01"},"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."]}