fkie_cve-2022-50485
Vulnerability from fkie_nvd
Published
2025-10-04 16:15
Modified
2025-10-06 14:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode There are many places that will get unhappy (and crash) when ext4_iget() returns a bad inode. However, if iget the boot loader inode, allows a bad inode to be returned, because the inode may not be initialized. This mechanism can be used to bypass some checks and cause panic. To solve this problem, we add a special iget flag EXT4_IGET_BAD. Only with this flag we'd be returning bad inode from ext4_iget(), otherwise we always return the error code if the inode is bad inode.(suggested by Jan Kara)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2142dfa1de61e25b83198af0308ec7689cca25d3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/488a5c2bf7543c3cd3f07a025f2e62be91599430
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0a738875c2e9c8c3366d792f8bf7fe508d5e5a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f725b290ed79ad61e4f721fee95a287892d8b1ad
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f7e6b5548f915d7aa435d0764d41eacfb49c6e09
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: add EXT4_IGET_BAD flag to prevent unexpected bad inode\n\nThere are many places that will get unhappy (and crash) when ext4_iget()\nreturns a bad inode. However, if iget the boot loader inode, allows a bad\ninode to be returned, because the inode may not be initialized. This\nmechanism can be used to bypass some checks and cause panic. To solve this\nproblem, we add a special iget flag EXT4_IGET_BAD. Only with this flag\nwe\u0027d be returning bad inode from ext4_iget(), otherwise we always return\nthe error code if the inode is bad inode.(suggested by Jan Kara)"
    }
  ],
  "id": "CVE-2022-50485",
  "lastModified": "2025-10-06T14:56:47.823",
  "metrics": {},
  "published": "2025-10-04T16:15:45.340",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2142dfa1de61e25b83198af0308ec7689cca25d3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/488a5c2bf7543c3cd3f07a025f2e62be91599430"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c0a738875c2e9c8c3366d792f8bf7fe508d5e5a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f725b290ed79ad61e4f721fee95a287892d8b1ad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f7e6b5548f915d7aa435d0764d41eacfb49c6e09"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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