GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2023-53270 (GCVE-0-2023-53270)

Vulnerability from cvelistv5 – Published: 2025-09-16 08:06 – Updated: 2026-05-11 19:41
VLAI
Title
ext4: fix i_disksize exceeding i_size problem in paritally written case
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix i_disksize exceeding i_size problem in paritally written case It is possible for i_disksize can exceed i_size, triggering a warning. generic_perform_write copied = iov_iter_copy_from_user_atomic(len) // copied < len ext4_da_write_end | ext4_update_i_disksize | new_i_size = pos + copied; | WRITE_ONCE(EXT4_I(inode)->i_disksize, newsize) // update i_disksize | generic_write_end | copied = block_write_end(copied, len) // copied = 0 | if (unlikely(copied < len)) | if (!PageUptodate(page)) | copied = 0; | if (pos + copied > inode->i_size) // return false if (unlikely(copied == 0)) goto again; if (unlikely(iov_iter_fault_in_readable(i, bytes))) { status = -EFAULT; break; } We get i_disksize greater than i_size here, which could trigger WARNING check 'i_size_read(inode) < EXT4_I(inode)->i_disksize' while doing dio: ext4_dio_write_iter iomap_dio_rw __iomap_dio_rw // return err, length is not aligned to 512 ext4_handle_inode_extension WARN_ON_ONCE(i_size_read(inode) < EXT4_I(inode)->i_disksize) // Oops WARNING: CPU: 2 PID: 2609 at fs/ext4/file.c:319 CPU: 2 PID: 2609 Comm: aa Not tainted 6.3.0-rc2 RIP: 0010:ext4_file_write_iter+0xbc7 Call Trace: vfs_write+0x3b1 ksys_write+0x77 do_syscall_64+0x39 Fix it by updating 'copied' value before updating i_disksize just like ext4_write_inline_data_end() does. A reproducer can be found in the buganizer link below.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 18:05 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 64769240bd07f446f83660bb143bb609d8ab4910 , < 18eb23891aeae3229baf8c7c23b76be3364e1967 (git)
Affected: 64769240bd07f446f83660bb143bb609d8ab4910 , < d30090eb546d993ea3f3023452540c476ea614a5 (git)
Affected: 64769240bd07f446f83660bb143bb609d8ab4910 , < 3ecea2fee14227712694c8b54ad99d471e61de92 (git)
Affected: 64769240bd07f446f83660bb143bb609d8ab4910 , < 53877ed201baa6b58f7ce9df92664a839113c30e (git)
Affected: 64769240bd07f446f83660bb143bb609d8ab4910 , < 1dedde690303c05ef732b7c5c8356fdf60a4ade3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.27
Unaffected: 0 , < 2.6.27 (semver)
Unaffected: 5.15.111 , ≤ 5.15.* (semver)
Unaffected: 6.1.28 , ≤ 6.1.* (semver)
Unaffected: 6.2.15 , ≤ 6.2.* (semver)
Unaffected: 6.3.2 , ≤ 6.3.* (semver)
Unaffected: 6.4 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-53270",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T18:05:22.699836Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T18:12:53.306Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "18eb23891aeae3229baf8c7c23b76be3364e1967",
              "status": "affected",
              "version": "64769240bd07f446f83660bb143bb609d8ab4910",
              "versionType": "git"
            },
            {
              "lessThan": "d30090eb546d993ea3f3023452540c476ea614a5",
              "status": "affected",
              "version": "64769240bd07f446f83660bb143bb609d8ab4910",
              "versionType": "git"
            },
            {
              "lessThan": "3ecea2fee14227712694c8b54ad99d471e61de92",
              "status": "affected",
              "version": "64769240bd07f446f83660bb143bb609d8ab4910",
              "versionType": "git"
            },
            {
              "lessThan": "53877ed201baa6b58f7ce9df92664a839113c30e",
              "status": "affected",
              "version": "64769240bd07f446f83660bb143bb609d8ab4910",
              "versionType": "git"
            },
            {
              "lessThan": "1dedde690303c05ef732b7c5c8356fdf60a4ade3",
              "status": "affected",
              "version": "64769240bd07f446f83660bb143bb609d8ab4910",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.27"
            },
            {
              "lessThan": "2.6.27",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.28",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.15",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.111",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.28",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2.15",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.2",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4",
                  "versionStartIncluding": "2.6.27",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix i_disksize exceeding i_size problem in paritally written case\n\nIt is possible for i_disksize can exceed i_size, triggering a warning.\n\ngeneric_perform_write\n copied = iov_iter_copy_from_user_atomic(len) // copied \u003c len\n ext4_da_write_end\n | ext4_update_i_disksize\n |  new_i_size = pos + copied;\n |  WRITE_ONCE(EXT4_I(inode)-\u003ei_disksize, newsize) // update i_disksize\n | generic_write_end\n |  copied = block_write_end(copied, len) // copied = 0\n |   if (unlikely(copied \u003c len))\n |    if (!PageUptodate(page))\n |     copied = 0;\n |  if (pos + copied \u003e inode-\u003ei_size) // return false\n if (unlikely(copied == 0))\n  goto again;\n if (unlikely(iov_iter_fault_in_readable(i, bytes))) {\n  status = -EFAULT;\n  break;\n }\n\nWe get i_disksize greater than i_size here, which could trigger WARNING\ncheck \u0027i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize\u0027 while doing dio:\n\next4_dio_write_iter\n iomap_dio_rw\n  __iomap_dio_rw // return err, length is not aligned to 512\n ext4_handle_inode_extension\n  WARN_ON_ONCE(i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize) // Oops\n\n WARNING: CPU: 2 PID: 2609 at fs/ext4/file.c:319\n CPU: 2 PID: 2609 Comm: aa Not tainted 6.3.0-rc2\n RIP: 0010:ext4_file_write_iter+0xbc7\n Call Trace:\n  vfs_write+0x3b1\n  ksys_write+0x77\n  do_syscall_64+0x39\n\nFix it by updating \u0027copied\u0027 value before updating i_disksize just like\next4_write_inline_data_end() does.\n\nA reproducer can be found in the buganizer link below."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:41:40.526Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/18eb23891aeae3229baf8c7c23b76be3364e1967"
        },
        {
          "url": "https://git.kernel.org/stable/c/d30090eb546d993ea3f3023452540c476ea614a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ecea2fee14227712694c8b54ad99d471e61de92"
        },
        {
          "url": "https://git.kernel.org/stable/c/53877ed201baa6b58f7ce9df92664a839113c30e"
        },
        {
          "url": "https://git.kernel.org/stable/c/1dedde690303c05ef732b7c5c8356fdf60a4ade3"
        }
      ],
      "title": "ext4: fix i_disksize exceeding i_size problem in paritally written case",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53270",
    "datePublished": "2025-09-16T08:06:59.730Z",
    "dateReserved": "2025-09-16T08:05:12.516Z",
    "dateUpdated": "2026-05-11T19:41:40.526Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53270",
      "date": "2026-09-16",
      "epss": "0.00155",
      "percentile": "0.05071"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53270\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-16T08:15:35.790\",\"lastModified\":\"2026-06-17T06:44:41.770\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix i_disksize exceeding i_size problem in paritally written case\\n\\nIt is possible for i_disksize can exceed i_size, triggering a warning.\\n\\ngeneric_perform_write\\n copied = iov_iter_copy_from_user_atomic(len) // copied \u003c len\\n ext4_da_write_end\\n | ext4_update_i_disksize\\n |  new_i_size = pos + copied;\\n |  WRITE_ONCE(EXT4_I(inode)-\u003ei_disksize, newsize) // update i_disksize\\n | generic_write_end\\n |  copied = block_write_end(copied, len) // copied = 0\\n |   if (unlikely(copied \u003c len))\\n |    if (!PageUptodate(page))\\n |     copied = 0;\\n |  if (pos + copied \u003e inode-\u003ei_size) // return false\\n if (unlikely(copied == 0))\\n  goto again;\\n if (unlikely(iov_iter_fault_in_readable(i, bytes))) {\\n  status = -EFAULT;\\n  break;\\n }\\n\\nWe get i_disksize greater than i_size here, which could trigger WARNING\\ncheck \u0027i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize\u0027 while doing dio:\\n\\next4_dio_write_iter\\n iomap_dio_rw\\n  __iomap_dio_rw // return err, length is not aligned to 512\\n ext4_handle_inode_extension\\n  WARN_ON_ONCE(i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize) // Oops\\n\\n WARNING: CPU: 2 PID: 2609 at fs/ext4/file.c:319\\n CPU: 2 PID: 2609 Comm: aa Not tainted 6.3.0-rc2\\n RIP: 0010:ext4_file_write_iter+0xbc7\\n Call Trace:\\n  vfs_write+0x3b1\\n  ksys_write+0x77\\n  do_syscall_64+0x39\\n\\nFix it by updating \u0027copied\u0027 value before updating i_disksize just like\\next4_write_inline_data_end() does.\\n\\nA reproducer can be found in the buganizer link below.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/ext4/inode.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"64769240bd07f446f83660bb143bb609d8ab4910\",\"lessThan\":\"18eb23891aeae3229baf8c7c23b76be3364e1967\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"64769240bd07f446f83660bb143bb609d8ab4910\",\"lessThan\":\"d30090eb546d993ea3f3023452540c476ea614a5\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"64769240bd07f446f83660bb143bb609d8ab4910\",\"lessThan\":\"3ecea2fee14227712694c8b54ad99d471e61de92\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"64769240bd07f446f83660bb143bb609d8ab4910\",\"lessThan\":\"53877ed201baa6b58f7ce9df92664a839113c30e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"64769240bd07f446f83660bb143bb609d8ab4910\",\"lessThan\":\"1dedde690303c05ef732b7c5c8356fdf60a4ade3\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/ext4/inode.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"2.6.27\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"2.6.27\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.111\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.28\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2.15\",\"lessThanOrEqual\":\"6.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3.2\",\"lessThanOrEqual\":\"6.3.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-14T18:05:22.699836Z\",\"id\":\"CVE-2023-53270\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.6.27\",\"versionEndExcluding\":\"5.15.111\",\"matchCriteriaId\":\"E217E5B6-1E04-4007-8308-A833389CBFA0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.28\",\"matchCriteriaId\":\"08F855F4-7188-4EE1-BD79-D4B6C7E2EF54\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.2.15\",\"matchCriteriaId\":\"3844A90B-940D-46C3-8D7B-9FF63F1AFC2F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.3\",\"versionEndExcluding\":\"6.3.2\",\"matchCriteriaId\":\"38F6F330-91A0-4675-8B90-6F950471A7CC\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/18eb23891aeae3229baf8c7c23b76be3364e1967\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/1dedde690303c05ef732b7c5c8356fdf60a4ade3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3ecea2fee14227712694c8b54ad99d471e61de92\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/53877ed201baa6b58f7ce9df92664a839113c30e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/d30090eb546d993ea3f3023452540c476ea614a5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:14:33+00:00",
      "cve": "CVE-2023-53270",
      "id": "CVE-2023-53270",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "279",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "76",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ext4: fix i_disksize exceeding i_size problem in paritally written case",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53270.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T01:45:12Z",
      "cve": "CVE-2023-53270",
      "id": "CVE-2023-53270",
      "initial_release_date": "2025-09-16T23:30:37Z",
      "product_status:known_affected": "546",
      "product_status:known_not_affected": "170",
      "product_status:recommended": "272",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-53270",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-53270.json",
      "version": "34"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-53270\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-14T18:05:22.699836Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-14T18:05:18.579Z\"}}], \"cna\": {\"title\": \"ext4: fix i_disksize exceeding i_size problem in paritally written case\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"64769240bd07f446f83660bb143bb609d8ab4910\", \"lessThan\": \"18eb23891aeae3229baf8c7c23b76be3364e1967\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64769240bd07f446f83660bb143bb609d8ab4910\", \"lessThan\": \"d30090eb546d993ea3f3023452540c476ea614a5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64769240bd07f446f83660bb143bb609d8ab4910\", \"lessThan\": \"3ecea2fee14227712694c8b54ad99d471e61de92\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64769240bd07f446f83660bb143bb609d8ab4910\", \"lessThan\": \"53877ed201baa6b58f7ce9df92664a839113c30e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"64769240bd07f446f83660bb143bb609d8ab4910\", \"lessThan\": \"1dedde690303c05ef732b7c5c8356fdf60a4ade3\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/ext4/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\": \"2.6.27\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"2.6.27\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.111\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.28\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.2.15\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.2.*\"}, {\"status\": \"unaffected\", \"version\": \"6.3.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.3.*\"}, {\"status\": \"unaffected\", \"version\": \"6.4\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/ext4/inode.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/18eb23891aeae3229baf8c7c23b76be3364e1967\"}, {\"url\": \"https://git.kernel.org/stable/c/d30090eb546d993ea3f3023452540c476ea614a5\"}, {\"url\": \"https://git.kernel.org/stable/c/3ecea2fee14227712694c8b54ad99d471e61de92\"}, {\"url\": \"https://git.kernel.org/stable/c/53877ed201baa6b58f7ce9df92664a839113c30e\"}, {\"url\": \"https://git.kernel.org/stable/c/1dedde690303c05ef732b7c5c8356fdf60a4ade3\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\next4: fix i_disksize exceeding i_size problem in paritally written case\\n\\nIt is possible for i_disksize can exceed i_size, triggering a warning.\\n\\ngeneric_perform_write\\n copied = iov_iter_copy_from_user_atomic(len) // copied \u003c len\\n ext4_da_write_end\\n | ext4_update_i_disksize\\n |  new_i_size = pos + copied;\\n |  WRITE_ONCE(EXT4_I(inode)-\u003ei_disksize, newsize) // update i_disksize\\n | generic_write_end\\n |  copied = block_write_end(copied, len) // copied = 0\\n |   if (unlikely(copied \u003c len))\\n |    if (!PageUptodate(page))\\n |     copied = 0;\\n |  if (pos + copied \u003e inode-\u003ei_size) // return false\\n if (unlikely(copied == 0))\\n  goto again;\\n if (unlikely(iov_iter_fault_in_readable(i, bytes))) {\\n  status = -EFAULT;\\n  break;\\n }\\n\\nWe get i_disksize greater than i_size here, which could trigger WARNING\\ncheck \u0027i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize\u0027 while doing dio:\\n\\next4_dio_write_iter\\n iomap_dio_rw\\n  __iomap_dio_rw // return err, length is not aligned to 512\\n ext4_handle_inode_extension\\n  WARN_ON_ONCE(i_size_read(inode) \u003c EXT4_I(inode)-\u003ei_disksize) // Oops\\n\\n WARNING: CPU: 2 PID: 2609 at fs/ext4/file.c:319\\n CPU: 2 PID: 2609 Comm: aa Not tainted 6.3.0-rc2\\n RIP: 0010:ext4_file_write_iter+0xbc7\\n Call Trace:\\n  vfs_write+0x3b1\\n  ksys_write+0x77\\n  do_syscall_64+0x39\\n\\nFix it by updating \u0027copied\u0027 value before updating i_disksize just like\\next4_write_inline_data_end() does.\\n\\nA reproducer can be found in the buganizer link below.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.111\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.28\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.2.15\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.3.2\", \"versionStartIncluding\": \"2.6.27\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.4\", \"versionStartIncluding\": \"2.6.27\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T19:41:40.526Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-53270\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T19:41:40.526Z\", \"dateReserved\": \"2025-09-16T08:05:12.516Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2025-09-16T08:06:59.730Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.