CVE-2022-50485 (GCVE-0-2022-50485)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:16 – Updated: 2025-12-23 13:29
VLAI?
Title
ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode
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)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 393d1d1d76933886d5e1ce603214c9987589c6d5 , < 2142dfa1de61e25b83198af0308ec7689cca25d3 (git)
Affected: 393d1d1d76933886d5e1ce603214c9987589c6d5 , < c0a738875c2e9c8c3366d792f8bf7fe508d5e5a5 (git)
Affected: 393d1d1d76933886d5e1ce603214c9987589c6d5 , < f7e6b5548f915d7aa435d0764d41eacfb49c6e09 (git)
Affected: 393d1d1d76933886d5e1ce603214c9987589c6d5 , < f725b290ed79ad61e4f721fee95a287892d8b1ad (git)
Affected: 393d1d1d76933886d5e1ce603214c9987589c6d5 , < 488a5c2bf7543c3cd3f07a025f2e62be91599430 (git)
Affected: 393d1d1d76933886d5e1ce603214c9987589c6d5 , < 63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023 (git)
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    Linux Linux Affected: 3.10
Unaffected: 0 , < 3.10 (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.87 , ≤ 5.15.* (semver)
Unaffected: 6.0.18 , ≤ 6.0.* (semver)
Unaffected: 6.1.4 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)
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{
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          "programFiles": [
            "fs/ext4/ext4.h",
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              "version": "6.1.4",
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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      "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)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-23T13:29:37.091Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/2142dfa1de61e25b83198af0308ec7689cca25d3"
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        {
          "url": "https://git.kernel.org/stable/c/63b1e9bccb71fe7d7e3ddc9877dbdc85e5d2d023"
        }
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      "title": "ext4: add EXT4_IGET_BAD flag to prevent unexpected bad inode",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50485",
    "datePublished": "2025-10-04T15:16:43.093Z",
    "dateReserved": "2025-10-04T15:13:33.468Z",
    "dateUpdated": "2025-12-23T13:29:37.091Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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