CVE-2025-71268 (GCVE-0-2025-71268)
Vulnerability from cvelistv5
Published
2026-03-18 17:40
Modified
2026-10-19 18:25
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix reservation leak in some error paths when inserting inline extent If we fail to allocate a path or join a transaction, we return from __cow_file_range_inline() without freeing the reserved qgroup data, resulting in a leak. Fix this by ensuring we call btrfs_qgroup_free_data() in such cases.
References
Impacted products
Vendor Product Version
Linux Linux Version: 94ed938aba557aa798acf496f09afb289b619fcd
Version: 94ed938aba557aa798acf496f09afb289b619fcd
Version: 94ed938aba557aa798acf496f09afb289b619fcd
Version: 94ed938aba557aa798acf496f09afb289b619fcd
Version: 94ed938aba557aa798acf496f09afb289b619fcd
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-71268",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:06:12.033724Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-772",
                "description": "CWE-772 Missing Release of Resource after Effective Lifetime",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T18:25:25.013Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f7156512c8166d385f574b9ec030479aa7b1e8c9",
              "status": "affected",
              "version": "94ed938aba557aa798acf496f09afb289b619fcd",
              "versionType": "git"
            },
            {
              "lessThan": "28b97fcbbf523779688e8de5fe55bf2dae3859f6",
              "status": "affected",
              "version": "94ed938aba557aa798acf496f09afb289b619fcd",
              "versionType": "git"
            },
            {
              "lessThan": "f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913",
              "status": "affected",
              "version": "94ed938aba557aa798acf496f09afb289b619fcd",
              "versionType": "git"
            },
            {
              "lessThan": "28768bd3abf9995a93f6e01bfce01c60622964dd",
              "status": "affected",
              "version": "94ed938aba557aa798acf496f09afb289b619fcd",
              "versionType": "git"
            },
            {
              "lessThan": "c1c050f92d8f6aac4e17f7f2230160794fceef0c",
              "status": "affected",
              "version": "94ed938aba557aa798acf496f09afb289b619fcd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/btrfs/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.124",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.70",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.163",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.124",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.70",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.10",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "4.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix reservation leak in some error paths when inserting inline extent\n\nIf we fail to allocate a path or join a transaction, we return from\n__cow_file_range_inline() without freeing the reserved qgroup data,\nresulting in a leak. Fix this by ensuring we call btrfs_qgroup_free_data()\nin such cases."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - A remote attacker can reach Btrfs writeback through a guest-writable ksmbd or anonymous NFS export backed by the affected filesystem, using write-through or flush operations to force inline extent insertion.\nAC:L - On a qgroup-enabled deployment, the attacker can prepare many small inline writes and create concurrent memory pressure to induce the vulnerable allocation or transaction-handle failure; no victim-controlled race is required.\nPR:N - A writable guest SMB share or anonymous NFS export requires no authenticated privileges or kernel capabilities.\nUI:N - The attacker directly submits the writes and flush requests without requiring victim action.\nS:U - The leak affects Btrfs qgroup accounting within the same kernel and filesystem security authority.\nC:N - The bug neither exposes data nor creates an out-of-bounds read, use-after-free, or other memory-disclosure primitive.\nI:N - The defect only fails to release an accounting reservation and does not corrupt memory or modify filesystem data.\nA:H - Leaked reservations remain charged to the subvolume and its ancestor qgroups after delalloc cleanup and inode eviction, potentially exhausting a shared limit and denying all further writes until quotas are reset or the filesystem is remounted."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:12:37.025Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f7156512c8166d385f574b9ec030479aa7b1e8c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/28b97fcbbf523779688e8de5fe55bf2dae3859f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913"
        },
        {
          "url": "https://git.kernel.org/stable/c/28768bd3abf9995a93f6e01bfce01c60622964dd"
        },
        {
          "url": "https://git.kernel.org/stable/c/c1c050f92d8f6aac4e17f7f2230160794fceef0c"
        }
      ],
      "title": "btrfs: fix reservation leak in some error paths when inserting inline extent",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71268",
    "datePublished": "2026-03-18T17:40:58.080Z",
    "dateReserved": "2026-03-17T09:08:18.457Z",
    "dateUpdated": "2026-10-19T18:25:25.013Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-71268\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-16T15:06:12.033724Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-772\", \"description\": \"CWE-772 Missing Release of Resource after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-16T15:06:12.612Z\"}}], \"cna\": {\"title\": \"btrfs: fix reservation leak in some error paths when inserting inline extent\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:N - A remote attacker can reach Btrfs writeback through a guest-writable ksmbd or anonymous NFS export backed by the affected filesystem, using write-through or flush operations to force inline extent insertion.\\nAC:L - On a qgroup-enabled deployment, the attacker can prepare many small inline writes and create concurrent memory pressure to induce the vulnerable allocation or transaction-handle failure; no victim-controlled race is required.\\nPR:N - A writable guest SMB share or anonymous NFS export requires no authenticated privileges or kernel capabilities.\\nUI:N - The attacker directly submits the writes and flush requests without requiring victim action.\\nS:U - The leak affects Btrfs qgroup accounting within the same kernel and filesystem security authority.\\nC:N - The bug neither exposes data nor creates an out-of-bounds read, use-after-free, or other memory-disclosure primitive.\\nI:N - The defect only fails to release an accounting reservation and does not corrupt memory or modify filesystem data.\\nA:H - Leaked reservations remain charged to the subvolume and its ancestor qgroups after delalloc cleanup and inode eviction, potentially exhausting a shared limit and denying all further writes until quotas are reset or the filesystem is remounted.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"94ed938aba557aa798acf496f09afb289b619fcd\", \"lessThan\": \"f7156512c8166d385f574b9ec030479aa7b1e8c9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"94ed938aba557aa798acf496f09afb289b619fcd\", \"lessThan\": \"28b97fcbbf523779688e8de5fe55bf2dae3859f6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"94ed938aba557aa798acf496f09afb289b619fcd\", \"lessThan\": \"f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"94ed938aba557aa798acf496f09afb289b619fcd\", \"lessThan\": \"28768bd3abf9995a93f6e01bfce01c60622964dd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"94ed938aba557aa798acf496f09afb289b619fcd\", \"lessThan\": \"c1c050f92d8f6aac4e17f7f2230160794fceef0c\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/btrfs/inode.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.4\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.4\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.163\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.124\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.70\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.10\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"6.19\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/btrfs/inode.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f7156512c8166d385f574b9ec030479aa7b1e8c9\"}, {\"url\": \"https://git.kernel.org/stable/c/28b97fcbbf523779688e8de5fe55bf2dae3859f6\"}, {\"url\": \"https://git.kernel.org/stable/c/f3ee1732851aec6fe6b2cec2ef1b32d4e71d9913\"}, {\"url\": \"https://git.kernel.org/stable/c/28768bd3abf9995a93f6e01bfce01c60622964dd\"}, {\"url\": \"https://git.kernel.org/stable/c/c1c050f92d8f6aac4e17f7f2230160794fceef0c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nbtrfs: fix reservation leak in some error paths when inserting inline extent\\n\\nIf we fail to allocate a path or join a transaction, we return from\\n__cow_file_range_inline() without freeing the reserved qgroup data,\\nresulting in a leak. Fix this by ensuring we call btrfs_qgroup_free_data()\\nin such cases.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.163\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.124\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.70\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.10\", \"versionStartIncluding\": \"4.4\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.19\", \"versionStartIncluding\": \"4.4\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T12:12:37.025Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-71268\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T18:25:25.013Z\", \"dateReserved\": \"2026-03-17T09:08:18.457Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-03-18T17:40:58.080Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.