{
  "cveId": "CVE-2023-52779",
  "url": "https://patchblox.com/security/cve/CVE-2023-52779",
  "summary": "CVE-2023-52779 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52779, released May 21, 2024. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  fs: Pass AT_GETATTR_NOSEC flag to getattr interf...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  fs: Pass AT_GETATTR_NOSEC flag to getattr interface function  When vfs_getattr_nosec() calls a filesystem\u0027s getattr interface function then the \u0027nosec\u0027 should propagate into this function so that vfs_getattr_nosec() can again be called from the filesystem\u0027s gettattr rather than vfs_getattr(). The latter would add unnecessary security checks that the initial vfs_getattr_nosec() call wanted to avoid. Therefore, introduce the getattr flag GETATTR_NOSEC and allow to pass with the new getattr_flags parameter to the getattr interface function. In overlayfs and ecryptfs use this flag to determine which one of the two functions to call.  In a recent code change introduced to IMA vfs_getattr_nosec() ended up calling vfs_getattr() in overlayfs, which in turn called security_inode_getattr() on an exiting process that did not have current-\u003Efs set anymore, which then caused a kernel NULL pointer dereference. With this change the call to security_inode_getattr() can be avoided, thus avoiding the NULL pointer dereference.",
  "published": "2024-05-21T16:15:16Z",
  "severity": "medium",
  "cvss": 5.5,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00208,
  "epssPercentile": 0.10998,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.6.8-1",
      "fix": "DEBIAN-CVE-2023-52779",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52779",
      "released": "2024-05-21T16:15:16Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.6.8-1",
      "fix": "DEBIAN-CVE-2023-52779",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-52779",
      "released": "2024-05-21T16:15:16Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T13:31:49Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}