ghsa-5c27-9gp6-68q5
Vulnerability from github
Published
2024-08-21 09:31
Modified
2024-09-11 18:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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

gsmi: fix null-deref in gsmi_get_variable

We can get EFI variables without fetching the attribute, so we must allow for that in gsmi.

commit 859748255b43 ("efi: pstore: Omit efivars caching EFI varstore access layer") added a new get_variable call with attr=NULL, which triggers panic in gsmi.

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52893"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-21T07:15:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngsmi: fix null-deref in gsmi_get_variable\n\nWe can get EFI variables without fetching the attribute, so we must\nallow for that in gsmi.\n\ncommit 859748255b43 (\"efi: pstore: Omit efivars caching EFI varstore\naccess layer\") added a new get_variable call with attr=NULL, which\ntriggers panic in gsmi.",
  "id": "GHSA-5c27-9gp6-68q5",
  "modified": "2024-09-11T18:31:02Z",
  "published": "2024-08-21T09:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52893"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32313c11bdc8a02c577abaf865be3664ab30410a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6646d769fdb0ce4318ef9afd127f8526d1ca8393"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a769b05eeed7accc4019a1ed9799dd72067f1ce8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ae2a9dcc8caa60b1e14671294e5ec902ea5d1dfd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eb0421d90f916dffe96b4c049ddf01c0c50620d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee5763ef829bd923033510de6d1df7c73f085e4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ffef77794fb5f1245c3249b86342bad2299accb5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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