github - ghsa-gfhq-qmg6-x4ch

GHSA-GFHQ-QMG6-X4CH

Vulnerability from github – Published: 2025-12-30 15:30 – Updated: 2025-12-30 15:30

Details

In the Linux kernel, the following vulnerability has been resolved:

nilfs2: fix shift-out-of-bounds due to too large exponent of block size

If field s_log_block_size of superblock data is corrupted and too large, init_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds warning followed by a kernel panic (if panic_on_warn is set):

shift exponent 38973 is too large for 32-bit type 'int' Call Trace: dump_stack_lvl+0xcd/0x134 ubsan_epilogue+0xb/0x50 __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5 init_nilfs.cold.11+0x18/0x1d [nilfs2] nilfs_mount+0x9b5/0x12b0 [nilfs2] ...

This fixes the issue by adding and using a new helper function for getting block size with sanity check.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50864"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-30T13:16:01Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix shift-out-of-bounds due to too large exponent of block size\n\nIf field s_log_block_size of superblock data is corrupted and too large,\ninit_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds\nwarning followed by a kernel panic (if panic_on_warn is set):\n\n shift exponent 38973 is too large for 32-bit type \u0027int\u0027\n Call Trace:\n  \u003cTASK\u003e\n  dump_stack_lvl+0xcd/0x134\n  ubsan_epilogue+0xb/0x50\n  __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5\n  init_nilfs.cold.11+0x18/0x1d [nilfs2]\n  nilfs_mount+0x9b5/0x12b0 [nilfs2]\n  ...\n\nThis fixes the issue by adding and using a new helper function for getting\nblock size with sanity check.",
  "id": "GHSA-gfhq-qmg6-x4ch",
  "modified": "2025-12-30T15:30:28Z",
  "published": "2025-12-30T15:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50864"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2022-50864 (GCVE-0-2022-50864)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2025-12-30 12:15

Title

nilfs2: fix shift-out-of-bounds due to too large exponent of block size

Summary

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix shift-out-of-bounds due to too large exponent of block size If field s_log_block_size of superblock data is corrupted and too large, init_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds warning followed by a kernel panic (if panic_on_warn is set): shift exponent 38973 is too large for 32-bit type 'int' Call Trace: <TASK> dump_stack_lvl+0xcd/0x134 ubsan_epilogue+0xb/0x50 __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5 init_nilfs.cold.11+0x18/0x1d [nilfs2] nilfs_mount+0x9b5/0x12b0 [nilfs2] ... This fixes the issue by adding and using a new helper function for getting block size with sanity check.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/ec93b5430ec0f6087…
	https://git.kernel.org/stable/c/8b6ef451b5701b37d…
	https://git.kernel.org/stable/c/ddb6615a168f97b91…
	https://git.kernel.org/stable/c/a16731fa1b96226c7…
	https://git.kernel.org/stable/c/ebeccaaef67a4895d…

Impacted products

Vendor

Product

Version

Linux

Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ec93b5430ec0f60877a5388bb023d60624f9ab9f (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 8b6ef451b5701b37d9a5905534595776a662edfc (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ddb6615a168f97b91175e00eda4c644741cf531c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a16731fa1b96226c75bbf18e73513b14fc318360 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ebeccaaef67a4895d2496ab8d9c2fb8d89201211 (git)

Linux

Unaffected: 5.10.163 , ≤ 5.10.* (semver)
Unaffected: 5.15.86 , ≤ 5.15.* (semver)
Unaffected: 6.0.16 , ≤ 6.0.* (semver)
Unaffected: 6.1.2 , ≤ 6.1.* (semver)
Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/the_nilfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ec93b5430ec0f60877a5388bb023d60624f9ab9f",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "8b6ef451b5701b37d9a5905534595776a662edfc",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ddb6615a168f97b91175e00eda4c644741cf531c",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a16731fa1b96226c75bbf18e73513b14fc318360",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "ebeccaaef67a4895d2496ab8d9c2fb8d89201211",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/the_nilfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.86",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.16",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.163",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.86",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
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                }
              ],
              "negate": false,
              "operator": "OR"
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix shift-out-of-bounds due to too large exponent of block size\n\nIf field s_log_block_size of superblock data is corrupted and too large,\ninit_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds\nwarning followed by a kernel panic (if panic_on_warn is set):\n\n shift exponent 38973 is too large for 32-bit type \u0027int\u0027\n Call Trace:\n  \u003cTASK\u003e\n  dump_stack_lvl+0xcd/0x134\n  ubsan_epilogue+0xb/0x50\n  __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5\n  init_nilfs.cold.11+0x18/0x1d [nilfs2]\n  nilfs_mount+0x9b5/0x12b0 [nilfs2]\n  ...\n\nThis fixes the issue by adding and using a new helper function for getting\nblock size with sanity check."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:15:36.489Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc"
        },
        {
          "url": "https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360"
        },
        {
          "url": "https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211"
        }
      ],
      "title": "nilfs2: fix shift-out-of-bounds due to too large exponent of block size",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50864",
    "datePublished": "2025-12-30T12:15:36.489Z",
    "dateReserved": "2025-12-30T12:06:07.135Z",
    "dateUpdated": "2025-12-30T12:15:36.489Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

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.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

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GHSA-GFHQ-QMG6-X4CH

CVE-2022-50864 (GCVE-0-2022-50864)

Tags

Sightings

Nomenclature