GHSA-VW34-J5VP-R98R

Vulnerability from github – Published: 2024-11-08 06:30 – Updated: 2025-11-04 00:31
VLAI?
Details

In the Linux kernel, the following vulnerability has been resolved:

x86/entry_32: Clear CPU buffers after register restore in NMI return

CPU buffers are currently cleared after call to exc_nmi, but before register state is restored. This may be okay for MDS mitigation but not for RDFS. Because RDFS mitigation requires CPU buffers to be cleared when registers don't have any sensitive data.

Move CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.

Severity ?
7.1 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-50193"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-08T06:15:16Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/entry_32: Clear CPU buffers after register restore in NMI return\n\nCPU buffers are currently cleared after call to exc_nmi, but before\nregister state is restored. This may be okay for MDS mitigation but not for\nRDFS. Because RDFS mitigation requires CPU buffers to be cleared when\nregisters don\u0027t have any sensitive data.\n\nMove CLEAR_CPU_BUFFERS after RESTORE_ALL_NMI.",
  "id": "GHSA-vw34-j5vp-r98r",
  "modified": "2025-11-04T00:31:57Z",
  "published": "2024-11-08T06:30:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50193"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/227358e89703c344008119be7e8ffa3fdb5b92de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43778de19d2ef129636815274644b9c16e78c66b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48a2440d0f20c826b884e04377ccc1e4696c84e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64adf22c4bc73ede920baca5defefb70f190cdbc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f44a5fc15b5cece0785bc07453db77d99b0a6de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6400eb0b347821efc57760221f8fb6d63b9548a"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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Detection rules are retrieved from Rulezet.