Vulnerability-Lookup

FKIE_CVE-2022-50869

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-08-04 10:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix slab-out-of-bounds in r_page When PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for the first time, the size of *buffer would be equal to DefaultLogPageSize(4K).But for *buffer operations like memcpy, if the memory area size(n) which being assigned to buffer is larger than 4K (log->page_size(64K) or bytes(64K-page_off)), it will cause an out of boundary error. Call trace: [...] kasan_report+0x44/0x130 check_memory_region+0xf8/0x1a0 memcpy+0xc8/0x100 ntfs_read_run_nb+0x20c/0x460 read_log_page+0xd0/0x1f4 log_read_rst+0x110/0x75c log_replay+0x1e8/0x4aa0 ntfs_loadlog_and_replay+0x290/0x2d0 ntfs_fill_super+0x508/0xec0 get_tree_bdev+0x1fc/0x34c [...] Fix this by setting variable r_page to NULL in log_read_rst.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6d076293e5bffdf897ea5f975669206e09beed6a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bf86a640a34947d92062996e1a75b9cd9d83dd19
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ecfbd57cf9c5ca225184ae266ce44ae473792132
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ed686e7a26dd19ae6b46bb662f735acfa88ff7bc

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/fslog.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ed686e7a26dd19ae6b46bb662f735acfa88ff7bc",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            },
            {
              "lessThan": "bf86a640a34947d92062996e1a75b9cd9d83dd19",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            },
            {
              "lessThan": "6d076293e5bffdf897ea5f975669206e09beed6a",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            },
            {
              "lessThan": "ecfbd57cf9c5ca225184ae266ce44ae473792132",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/fslog.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix slab-out-of-bounds in r_page\n\nWhen PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for\nthe first time, the size of *buffer would be equal to\nDefaultLogPageSize(4K).But for *buffer operations like memcpy,\nif the memory area size(n) which being assigned to buffer is larger\nthan 4K (log-\u003epage_size(64K) or bytes(64K-page_off)), it will cause\nan out of boundary error.\n Call trace:\n  [...]\n  kasan_report+0x44/0x130\n  check_memory_region+0xf8/0x1a0\n  memcpy+0xc8/0x100\n  ntfs_read_run_nb+0x20c/0x460\n  read_log_page+0xd0/0x1f4\n  log_read_rst+0x110/0x75c\n  log_replay+0x1e8/0x4aa0\n  ntfs_loadlog_and_replay+0x290/0x2d0\n  ntfs_fill_super+0x508/0xec0\n  get_tree_bdev+0x1fc/0x34c\n  [...]\n\nFix this by setting variable r_page to NULL in log_read_rst."
    }
  ],
  "id": "CVE-2022-50869",
  "lastModified": "2026-08-04T10:18:25.027",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-12-30T13:16:01.760",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6d076293e5bffdf897ea5f975669206e09beed6a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bf86a640a34947d92062996e1a75b9cd9d83dd19"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ecfbd57cf9c5ca225184ae266ce44ae473792132"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ed686e7a26dd19ae6b46bb662f735acfa88ff7bc"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}

CVE-2022-50869 (GCVE-0-2022-50869)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:15 – Updated: 2026-08-05 08:59

Title

fs/ntfs3: Fix slab-out-of-bounds in r_page

Summary

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 7063 records in the last 180 days details

References

4 references

URL	Tags
https://git.kernel.org/stable/c/ed686e7a26dd19ae6…
https://git.kernel.org/stable/c/bf86a640a34947d92…
https://git.kernel.org/stable/c/6d076293e5bffdf89…
https://git.kernel.org/stable/c/ecfbd57cf9c5ca225…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: b46acd6a6a627d876898e1c84d3f84902264b445 , < ed686e7a26dd19ae6b46bb662f735acfa88ff7bc (git) Affected: b46acd6a6a627d876898e1c84d3f84902264b445 , < bf86a640a34947d92062996e1a75b9cd9d83dd19 (git) Affected: b46acd6a6a627d876898e1c84d3f84902264b445 , < 6d076293e5bffdf897ea5f975669206e09beed6a (git) Affected: b46acd6a6a627d876898e1c84d3f84902264b445 , < ecfbd57cf9c5ca225184ae266ce44ae473792132 (git)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.87 , ≤ 5.15.* (semver) Unaffected: 6.0.17 , ≤ 6.0.* (semver) Unaffected: 6.1.3 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/fslog.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ed686e7a26dd19ae6b46bb662f735acfa88ff7bc",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            },
            {
              "lessThan": "bf86a640a34947d92062996e1a75b9cd9d83dd19",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            },
            {
              "lessThan": "6d076293e5bffdf897ea5f975669206e09beed6a",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            },
            {
              "lessThan": "ecfbd57cf9c5ca225184ae266ce44ae473792132",
              "status": "affected",
              "version": "b46acd6a6a627d876898e1c84d3f84902264b445",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/fslog.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "lessThan": "5.15",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.3",
              "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": "5.15.87",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.17",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.3",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "5.15",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix slab-out-of-bounds in r_page\n\nWhen PAGE_SIZE is 64K, if read_log_page is called by log_read_rst for\nthe first time, the size of *buffer would be equal to\nDefaultLogPageSize(4K).But for *buffer operations like memcpy,\nif the memory area size(n) which being assigned to buffer is larger\nthan 4K (log-\u003epage_size(64K) or bytes(64K-page_off)), it will cause\nan out of boundary error.\n Call trace:\n  [...]\n  kasan_report+0x44/0x130\n  check_memory_region+0xf8/0x1a0\n  memcpy+0xc8/0x100\n  ntfs_read_run_nb+0x20c/0x460\n  read_log_page+0xd0/0x1f4\n  log_read_rst+0x110/0x75c\n  log_replay+0x1e8/0x4aa0\n  ntfs_loadlog_and_replay+0x290/0x2d0\n  ntfs_fill_super+0x508/0xec0\n  get_tree_bdev+0x1fc/0x34c\n  [...]\n\nFix this by setting variable r_page to NULL in log_read_rst."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached only by presenting a crafted NTFS volume to the in-kernel ntfs3 driver so mount runs ntfs_fill_super\u2192ntfs_loadlog_and_replay\u2192log_replay\u2192log_read_rst\u2192read _log_page; this is a local block-device/loop/USB image path with no network protocol handler.\nAC:L - On 16K/64K PAGE_SIZE kernels log-\u003epage_size exceeds the fixed 4K r_page allocation so the first read_log_page deterministically overflows; on 4K kernels a crafted on-disk sys_page_size \u003c 4096 takes the realloc path and overflows the same way, with no race or uncontrollable layout dependency.\nPR:N - The attacker needs no account on the target\u2014the payload is solely a malicious NTFS image (USB stick, disk image, or media handed to udisks2/automount on desktops, kiosks, Android, or automotive systems), matching other ntfs3 image-parsing scores.\nUI:R - Someone must mount the volume or insert the media into a system that automounts it; ntfs3 is FS_REQUIRES_DEV without FS_USERNS_MOUNT, so an unprivileged userns cannot mount it alone.\nS:U - The slab out-of-bounds write corrupts host kernel heap within the same security authority as the mounting kernel; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - ntfs_read_run_nb memcpy\u0027s up to tens of KiB of attacker-controlled $LogFile bytes past a 4K slab object into adjacent heap, enabling classic heap-overlap disclosure primitives consistent with memory-corruption guidance.\nI:H - This is a large attacker-controlled slab out-of-bounds write (disk contents into undersized r_page), providing a heap write primitive suitable for adjacent-object corruption and control-flow hijack.\nA:H - The commit\u0027s KASAN stack shows a slab-out-of-bounds fault in ntfs_read_run_nb during mount that oopses/panics the kernel, fully denying availability."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:59:54.196Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ed686e7a26dd19ae6b46bb662f735acfa88ff7bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/bf86a640a34947d92062996e1a75b9cd9d83dd19"
        },
        {
          "url": "https://git.kernel.org/stable/c/6d076293e5bffdf897ea5f975669206e09beed6a"
        },
        {
          "url": "https://git.kernel.org/stable/c/ecfbd57cf9c5ca225184ae266ce44ae473792132"
        }
      ],
      "title": "fs/ntfs3: Fix slab-out-of-bounds in r_page",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50869",
    "datePublished": "2025-12-30T12:15:39.879Z",
    "dateReserved": "2025-12-30T12:06:07.136Z",
    "dateUpdated": "2026-08-05T08:59:54.196Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

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