ghsa-p87g-j8m4-pq52
Vulnerability from github
Published
2024-11-08 06:30
Modified
2024-11-19 18:30
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:

nilfs2: propagate directory read errors from nilfs_find_entry()

Syzbot reported that a task hang occurs in vcs_open() during a fuzzing test for nilfs2.

The root cause of this problem is that in nilfs_find_entry(), which searches for directory entries, ignores errors when loading a directory page/folio via nilfs_get_folio() fails.

If the filesystem images is corrupted, and the i_size of the directory inode is large, and the directory page/folio is successfully read but fails the sanity check, for example when it is zero-filled, nilfs_check_folio() may continue to spit out error messages in bursts.

Fix this issue by propagating the error to the callers when loading a page/folio fails in nilfs_find_entry().

The current interface of nilfs_find_entry() and its callers is outdated and cannot propagate error codes such as -EIO and -ENOMEM returned via nilfs_find_entry(), so fix it together.

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{
   affected: [],
   aliases: [
      "CVE-2024-50202",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-755",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-11-08T06:15:16Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: propagate directory read errors from nilfs_find_entry()\n\nSyzbot reported that a task hang occurs in vcs_open() during a fuzzing\ntest for nilfs2.\n\nThe root cause of this problem is that in nilfs_find_entry(), which\nsearches for directory entries, ignores errors when loading a directory\npage/folio via nilfs_get_folio() fails.\n\nIf the filesystem images is corrupted, and the i_size of the directory\ninode is large, and the directory page/folio is successfully read but\nfails the sanity check, for example when it is zero-filled,\nnilfs_check_folio() may continue to spit out error messages in bursts.\n\nFix this issue by propagating the error to the callers when loading a\npage/folio fails in nilfs_find_entry().\n\nThe current interface of nilfs_find_entry() and its callers is outdated\nand cannot propagate error codes such as -EIO and -ENOMEM returned via\nnilfs_find_entry(), so fix it together.",
   id: "GHSA-p87g-j8m4-pq52",
   modified: "2024-11-19T18:30:54Z",
   published: "2024-11-08T06:30:49Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-50202",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/08cfa12adf888db98879dbd735bc741360a34168",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/270a6f9df35fa2aea01ec23770dc9b3fc9a12989",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/9698088ac7704e260f492d9c254e29ed7dd8729a",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/b4b3dc9e7e604be98a222e9f941f5e93798ca475",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/bb857ae1efd3138c653239ed1e7aef14e1242c81",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/c1d0476885d708a932980b0f28cd90d9bd71db39",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/edf8146057264191d5bfe5b91773f13d936dadd3",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/efa810b15a25531cbc2f527330947b9fe16916e7",
      },
   ],
   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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