ghsa-fx88-897w-ccgj
Vulnerability from github
Published
2025-03-27 18:31
Modified
2025-04-15 15:30
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:

efi: fix potential NULL deref in efi_mem_reserve_persistent

When iterating on a linked list, a result of memremap is dereferenced without checking it for NULL.

This patch adds a check that falls back on allocating a new page in case memremap doesn't succeed.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

[ardb: return -ENOMEM instead of breaking out of the loop]

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2023-52976"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-27T17:15:44Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nefi: fix potential NULL deref in efi_mem_reserve_persistent\n\nWhen iterating on a linked list, a result of memremap is dereferenced\nwithout checking it for NULL.\n\nThis patch adds a check that falls back on allocating a new page in\ncase memremap doesn\u0027t succeed.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE.\n\n[ardb: return -ENOMEM instead of breaking out of the loop]",
  "id": "GHSA-fx88-897w-ccgj",
  "modified": "2025-04-15T15:30:47Z",
  "published": "2025-03-27T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52976"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87d4ff18738fd71e7e3c10827c80257da6283697"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/966d47e1f27c45507c5df82b2a2157e5a4fd3909"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a2e6a9ff89f13666a1c3ff7195612ab949ea9afc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8fc0b5fb3e816a4a8684bcd3ed02cbef0fce23c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d92a25627bcdf264183670da73c9a60c0bac327e"
    }
  ],
  "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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