{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-53270", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-09-16T08:05:12.516Z", "datePublished": "2025-09-16T08:06:59.730Z", "dateUpdated": "2026-05-11T19:41:40.526Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T19:41:40.526Z" }, "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 < len\n ext4_da_write_end\n | ext4_update_i_disksize\n | new_i_size = pos + copied;\n | WRITE_ONCE(EXT4_I(inode)->i_disksize, newsize) // update i_disksize\n | generic_write_end\n | copied = block_write_end(copied, len) // copied = 0\n | if (unlikely(copied < len))\n | if (!PageUptodate(page))\n | copied = 0;\n | if (pos + copied > inode->i_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 'i_size_read(inode) < EXT4_I(inode)->i_disksize' 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) < EXT4_I(inode)->i_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 'copied' 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": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/inode.c" ], "versions": [ { "version": "64769240bd07f446f83660bb143bb609d8ab4910", "lessThan": "18eb23891aeae3229baf8c7c23b76be3364e1967", "status": "affected", "versionType": "git" }, { "version": "64769240bd07f446f83660bb143bb609d8ab4910", "lessThan": "d30090eb546d993ea3f3023452540c476ea614a5", "status": "affected", "versionType": "git" }, { "version": "64769240bd07f446f83660bb143bb609d8ab4910", "lessThan": "3ecea2fee14227712694c8b54ad99d471e61de92", "status": "affected", "versionType": "git" }, { "version": "64769240bd07f446f83660bb143bb609d8ab4910", "lessThan": "53877ed201baa6b58f7ce9df92664a839113c30e", "status": "affected", "versionType": "git" }, { "version": "64769240bd07f446f83660bb143bb609d8ab4910", "lessThan": "1dedde690303c05ef732b7c5c8356fdf60a4ade3", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ext4/inode.c" ], "versions": [ { "version": "2.6.27", "status": "affected" }, { "version": "0", "lessThan": "2.6.27", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.111", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.28", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.15", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.2", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "5.15.111" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.1.28" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.2.15" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.3.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.27", "versionEndExcluding": "6.4" } ] } ] } ], "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" } }, "adp": [ { "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" } ] } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-14T18:12:53.306Z" } } ] } }