{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2022-49414", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.568Z", "datePublished": "2025-02-26T02:12:35.083Z", "dateUpdated": "2026-05-11T18:59:21.432Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:59:21.432Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix race condition between ext4_write and ext4_convert_inline_data\n\nHulk Robot reported a BUG_ON:\n ==================================================================\n EXT4-fs error (device loop3): ext4_mb_generate_buddy:805: group 0,\n block bitmap and bg descriptor inconsistent: 25 vs 31513 free clusters\n kernel BUG at fs/ext4/ext4_jbd2.c:53!\n invalid opcode: 0000 [#1] SMP KASAN PTI\n CPU: 0 PID: 25371 Comm: syz-executor.3 Not tainted 5.10.0+ #1\n RIP: 0010:ext4_put_nojournal fs/ext4/ext4_jbd2.c:53 [inline]\n RIP: 0010:__ext4_journal_stop+0x10e/0x110 fs/ext4/ext4_jbd2.c:116\n [...]\n Call Trace:\n ext4_write_inline_data_end+0x59a/0x730 fs/ext4/inline.c:795\n generic_perform_write+0x279/0x3c0 mm/filemap.c:3344\n ext4_buffered_write_iter+0x2e3/0x3d0 fs/ext4/file.c:270\n ext4_file_write_iter+0x30a/0x11c0 fs/ext4/file.c:520\n do_iter_readv_writev+0x339/0x3c0 fs/read_write.c:732\n do_iter_write+0x107/0x430 fs/read_write.c:861\n vfs_writev fs/read_write.c:934 [inline]\n do_pwritev+0x1e5/0x380 fs/read_write.c:1031\n [...]\n ==================================================================\n\nAbove issue may happen as follows:\n cpu1 cpu2\n__________________________|__________________________\ndo_pwritev\n vfs_writev\n do_iter_write\n ext4_file_write_iter\n ext4_buffered_write_iter\n generic_perform_write\n ext4_da_write_begin\n vfs_fallocate\n ext4_fallocate\n ext4_convert_inline_data\n ext4_convert_inline_data_nolock\n ext4_destroy_inline_data_nolock\n clear EXT4_STATE_MAY_INLINE_DATA\n ext4_map_blocks\n ext4_ext_map_blocks\n ext4_mb_new_blocks\n ext4_mb_regular_allocator\n ext4_mb_good_group_nolock\n ext4_mb_init_group\n ext4_mb_init_cache\n ext4_mb_generate_buddy --> error\n ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\n ext4_restore_inline_data\n set EXT4_STATE_MAY_INLINE_DATA\n ext4_block_write_begin\n ext4_da_write_end\n ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\n ext4_write_inline_data_end\n handle=NULL\n ext4_journal_stop(handle)\n __ext4_journal_stop\n ext4_put_nojournal(handle)\n ref_cnt = (unsigned long)handle\n BUG_ON(ref_cnt == 0) ---> BUG_ON\n\nThe lock held by ext4_convert_inline_data is xattr_sem, but the lock\nheld by generic_perform_write is i_rwsem. Therefore, the two locks can\nbe concurrent.\n\nTo solve above issue, we add inode_lock() for ext4_convert_inline_data().\nAt the same time, move ext4_convert_inline_data() in front of\next4_punch_hole(), remove similar handling from ext4_punch_hole()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ext4/extents.c", "fs/ext4/inode.c"], "versions": [{"version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "18881d7e517169193d9ef6c89c7f322e3e164277", "status": "affected", "versionType": "git"}, {"version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3d", "status": "affected", "versionType": "git"}, {"version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "14602353b350950b551eccc6b46411aa3b12ffe2", "status": "affected", "versionType": "git"}, {"version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "725e00cb7039eae291890f1bb19bc867176745f6", "status": "affected", "versionType": "git"}, {"version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32", "status": "affected", "versionType": "git"}, {"version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "f87c7a4b084afc13190cbb263538e444cb2b392a", "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/extents.c", "fs/ext4/inode.c"], "versions": [{"version": "3.8", "status": "affected"}, {"version": "0", "lessThan": "3.8", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.207", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.132", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.19", "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": "3.8", "versionEndExcluding": "5.4.207"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.10.132"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.15.46"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.17.14"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.18.3"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.8", "versionEndExcluding": "5.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/18881d7e517169193d9ef6c89c7f322e3e164277"}, {"url": "https://git.kernel.org/stable/c/91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3d"}, {"url": "https://git.kernel.org/stable/c/14602353b350950b551eccc6b46411aa3b12ffe2"}, {"url": "https://git.kernel.org/stable/c/725e00cb7039eae291890f1bb19bc867176745f6"}, {"url": "https://git.kernel.org/stable/c/ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32"}, {"url": "https://git.kernel.org/stable/c/f87c7a4b084afc13190cbb263538e444cb2b392a"}], "title": "ext4: fix race condition between ext4_write and ext4_convert_inline_data", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2022-49414", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:41:09.175529Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T19:46:50.027Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2022-49414", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-01T19:41:09.175529Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T16:46:48.816Z"}}], "cna": {"title": "ext4: fix race condition between ext4_write and ext4_convert_inline_data", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "18881d7e517169193d9ef6c89c7f322e3e164277", "versionType": "git"}, {"status": "affected", "version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3d", "versionType": "git"}, {"status": "affected", "version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "14602353b350950b551eccc6b46411aa3b12ffe2", "versionType": "git"}, {"status": "affected", "version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "725e00cb7039eae291890f1bb19bc867176745f6", "versionType": "git"}, {"status": "affected", "version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32", "versionType": "git"}, {"status": "affected", "version": "0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf", "lessThan": "f87c7a4b084afc13190cbb263538e444cb2b392a", "versionType": "git"}], "programFiles": ["fs/ext4/extents.c", "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": "3.8"}, {"status": "unaffected", "version": "0", "lessThan": "3.8", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.207", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.132", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.46", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "5.17.14", "versionType": "semver", "lessThanOrEqual": "5.17.*"}, {"status": "unaffected", "version": "5.18.3", "versionType": "semver", "lessThanOrEqual": "5.18.*"}, {"status": "unaffected", "version": "5.19", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/ext4/extents.c", "fs/ext4/inode.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/18881d7e517169193d9ef6c89c7f322e3e164277"}, {"url": "https://git.kernel.org/stable/c/91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3d"}, {"url": "https://git.kernel.org/stable/c/14602353b350950b551eccc6b46411aa3b12ffe2"}, {"url": "https://git.kernel.org/stable/c/725e00cb7039eae291890f1bb19bc867176745f6"}, {"url": "https://git.kernel.org/stable/c/ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32"}, {"url": "https://git.kernel.org/stable/c/f87c7a4b084afc13190cbb263538e444cb2b392a"}], "x_generator": {"engine": "bippy-1.2.0"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix race condition between ext4_write and ext4_convert_inline_data\n\nHulk Robot reported a BUG_ON:\n ==================================================================\n EXT4-fs error (device loop3): ext4_mb_generate_buddy:805: group 0,\n block bitmap and bg descriptor inconsistent: 25 vs 31513 free clusters\n kernel BUG at fs/ext4/ext4_jbd2.c:53!\n invalid opcode: 0000 [#1] SMP KASAN PTI\n CPU: 0 PID: 25371 Comm: syz-executor.3 Not tainted 5.10.0+ #1\n RIP: 0010:ext4_put_nojournal fs/ext4/ext4_jbd2.c:53 [inline]\n RIP: 0010:__ext4_journal_stop+0x10e/0x110 fs/ext4/ext4_jbd2.c:116\n [...]\n Call Trace:\n ext4_write_inline_data_end+0x59a/0x730 fs/ext4/inline.c:795\n generic_perform_write+0x279/0x3c0 mm/filemap.c:3344\n ext4_buffered_write_iter+0x2e3/0x3d0 fs/ext4/file.c:270\n ext4_file_write_iter+0x30a/0x11c0 fs/ext4/file.c:520\n do_iter_readv_writev+0x339/0x3c0 fs/read_write.c:732\n do_iter_write+0x107/0x430 fs/read_write.c:861\n vfs_writev fs/read_write.c:934 [inline]\n do_pwritev+0x1e5/0x380 fs/read_write.c:1031\n [...]\n ==================================================================\n\nAbove issue may happen as follows:\n cpu1 cpu2\n__________________________|__________________________\ndo_pwritev\n vfs_writev\n do_iter_write\n ext4_file_write_iter\n ext4_buffered_write_iter\n generic_perform_write\n ext4_da_write_begin\n vfs_fallocate\n ext4_fallocate\n ext4_convert_inline_data\n ext4_convert_inline_data_nolock\n ext4_destroy_inline_data_nolock\n clear EXT4_STATE_MAY_INLINE_DATA\n ext4_map_blocks\n ext4_ext_map_blocks\n ext4_mb_new_blocks\n ext4_mb_regular_allocator\n ext4_mb_good_group_nolock\n ext4_mb_init_group\n ext4_mb_init_cache\n ext4_mb_generate_buddy --> error\n ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\n ext4_restore_inline_data\n set EXT4_STATE_MAY_INLINE_DATA\n ext4_block_write_begin\n ext4_da_write_end\n ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\n ext4_write_inline_data_end\n handle=NULL\n ext4_journal_stop(handle)\n __ext4_journal_stop\n ext4_put_nojournal(handle)\n ref_cnt = (unsigned long)handle\n BUG_ON(ref_cnt == 0) ---> BUG_ON\n\nThe lock held by ext4_convert_inline_data is xattr_sem, but the lock\nheld by generic_perform_write is i_rwsem. Therefore, the two locks can\nbe concurrent.\n\nTo solve above issue, we add inode_lock() for ext4_convert_inline_data().\nAt the same time, move ext4_convert_inline_data() in front of\next4_punch_hole(), remove similar handling from ext4_punch_hole()."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.4.207", "versionStartIncluding": "3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.10.132", "versionStartIncluding": "3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.46", "versionStartIncluding": "3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.17.14", "versionStartIncluding": "3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.18.3", "versionStartIncluding": "3.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.19", "versionStartIncluding": "3.8"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T18:59:21.432Z"}}}, "cveMetadata": {"cveId": "CVE-2022-49414", "state": "PUBLISHED", "dateUpdated": "2026-05-11T18:59:21.432Z", "dateReserved": "2025-02-26T02:08:31.568Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2025-02-26T02:12:35.083Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "109BCDD7-33F8-40BE-B77A-E1C42BACBB08", "versionEndExcluding": "5.4.207", "versionStartIncluding": "3.8", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "46CE9FE9-22E3-45CA-8B5F-190C2CAFC5CE", "versionEndExcluding": "5.10.132", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20D41697-0E8B-4B7D-8842-F17BF2AA21E1", "versionEndExcluding": "5.15.46", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "15E2DD33-2255-4B76-9C15-04FF8CBAB252", "versionEndExcluding": "5.17.14", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E122216-2E9E-4B3E-B7B8-D575A45BA3C2", "versionEndExcluding": "5.18.3", "versionStartIncluding": "5.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix race condition between ext4_write and ext4_convert_inline_data\n\nHulk Robot reported a BUG_ON:\n ==================================================================\n EXT4-fs error (device loop3): ext4_mb_generate_buddy:805: group 0,\n block bitmap and bg descriptor inconsistent: 25 vs 31513 free clusters\n kernel BUG at fs/ext4/ext4_jbd2.c:53!\n invalid opcode: 0000 [#1] SMP KASAN PTI\n CPU: 0 PID: 25371 Comm: syz-executor.3 Not tainted 5.10.0+ #1\n RIP: 0010:ext4_put_nojournal fs/ext4/ext4_jbd2.c:53 [inline]\n RIP: 0010:__ext4_journal_stop+0x10e/0x110 fs/ext4/ext4_jbd2.c:116\n [...]\n Call Trace:\n ext4_write_inline_data_end+0x59a/0x730 fs/ext4/inline.c:795\n generic_perform_write+0x279/0x3c0 mm/filemap.c:3344\n ext4_buffered_write_iter+0x2e3/0x3d0 fs/ext4/file.c:270\n ext4_file_write_iter+0x30a/0x11c0 fs/ext4/file.c:520\n do_iter_readv_writev+0x339/0x3c0 fs/read_write.c:732\n do_iter_write+0x107/0x430 fs/read_write.c:861\n vfs_writev fs/read_write.c:934 [inline]\n do_pwritev+0x1e5/0x380 fs/read_write.c:1031\n [...]\n ==================================================================\n\nAbove issue may happen as follows:\n cpu1 cpu2\n__________________________|__________________________\ndo_pwritev\n vfs_writev\n do_iter_write\n ext4_file_write_iter\n ext4_buffered_write_iter\n generic_perform_write\n ext4_da_write_begin\n vfs_fallocate\n ext4_fallocate\n ext4_convert_inline_data\n ext4_convert_inline_data_nolock\n ext4_destroy_inline_data_nolock\n clear EXT4_STATE_MAY_INLINE_DATA\n ext4_map_blocks\n ext4_ext_map_blocks\n ext4_mb_new_blocks\n ext4_mb_regular_allocator\n ext4_mb_good_group_nolock\n ext4_mb_init_group\n ext4_mb_init_cache\n ext4_mb_generate_buddy --> error\n ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\n ext4_restore_inline_data\n set EXT4_STATE_MAY_INLINE_DATA\n ext4_block_write_begin\n ext4_da_write_end\n ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\n ext4_write_inline_data_end\n handle=NULL\n ext4_journal_stop(handle)\n __ext4_journal_stop\n ext4_put_nojournal(handle)\n ref_cnt = (unsigned long)handle\n BUG_ON(ref_cnt == 0) ---> BUG_ON\n\nThe lock held by ext4_convert_inline_data is xattr_sem, but the lock\nheld by generic_perform_write is i_rwsem. Therefore, the two locks can\nbe concurrent.\n\nTo solve above issue, we add inode_lock() for ext4_convert_inline_data().\nAt the same time, move ext4_convert_inline_data() in front of\next4_punch_hole(), remove similar handling from ext4_punch_hole()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: se corrige la condici\u00f3n de ejecuci\u00f3n entre ext4_write y ext4_convert_inline_data Hulk Robot inform\u00f3 de un BUG_ON: ================================================================== EXT4-fs error (device loop3): ext4_mb_generate_buddy:805: group 0, block bitmap and bg descriptor inconsistent: 25 vs 31513 free clusters kernel BUG at fs/ext4/ext4_jbd2.c:53! invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 PID: 25371 Comm: syz-executor.3 Not tainted 5.10.0+ #1 RIP: 0010:ext4_put_nojournal fs/ext4/ext4_jbd2.c:53 [inline] RIP: 0010:__ext4_journal_stop+0x10e/0x110 fs/ext4/ext4_jbd2.c:116 [...] Call Trace: ext4_write_inline_data_end+0x59a/0x730 fs/ext4/inline.c:795 generic_perform_write+0x279/0x3c0 mm/filemap.c:3344 ext4_buffered_write_iter+0x2e3/0x3d0 fs/ext4/file.c:270 ext4_file_write_iter+0x30a/0x11c0 fs/ext4/file.c:520 do_iter_readv_writev+0x339/0x3c0 fs/read_write.c:732 do_iter_write+0x107/0x430 fs/read_write.c:861 vfs_writev fs/read_write.c:934 [inline] do_pwritev+0x1e5/0x380 fs/read_write.c:1031 [...] ================================================================== Above issue may happen as follows: cpu1 cpu2 __________________________|__________________________ do_pwritev vfs_writev do_iter_write ext4_file_write_iter ext4_buffered_write_iter generic_perform_write ext4_da_write_begin vfs_fallocate ext4_fallocate ext4_convert_inline_data ext4_convert_inline_data_nolock ext4_destroy_inline_data_nolock clear EXT4_STATE_MAY_INLINE_DATA ext4_map_blocks ext4_ext_map_blocks ext4_mb_new_blocks ext4_mb_regular_allocator ext4_mb_good_group_nolock ext4_mb_init_group ext4_mb_init_cache ext4_mb_generate_buddy --> error ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA) ext4_restore_inline_data set EXT4_STATE_MAY_INLINE_DATA ext4_block_write_begin ext4_da_write_end ext4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA) ext4_write_inline_data_end handle=NULL ext4_journal_stop(handle) __ext4_journal_stop ext4_put_nojournal(handle) ref_cnt = (unsigned long)handle BUG_ON(ref_cnt == 0) ---> BUG_ON The lock held by ext4_convert_inline_data is xattr_sem, but the lock held by generic_perform_write is i_rwsem. Therefore, the two locks can be concurrent. To solve above issue, we add inode_lock() for ext4_convert_inline_data(). At the same time, move ext4_convert_inline_data() in front of ext4_punch_hole(), remove similar handling from ext4_punch_hole(). "}], "id": "CVE-2022-49414", "lastModified": "2025-10-01T20:16:18.193", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-02-26T07:01:17.890", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/14602353b350950b551eccc6b46411aa3b12ffe2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/18881d7e517169193d9ef6c89c7f322e3e164277"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/725e00cb7039eae291890f1bb19bc867176745f6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f87c7a4b084afc13190cbb263538e444cb2b392a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-362"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "kernel: ext4: fix race condition between ext4_write and ext4_convert_inline_data", "id": "2348332", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348332"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-362", "details": ["In the Linux kernel, the following vulnerability has been resolved:\next4: fix race condition between ext4_write and ext4_convert_inline_data\nHulk Robot reported a BUG_ON:\n==================================================================\nEXT4-fs error (device loop3): ext4_mb_generate_buddy:805: group 0,\nblock bitmap and bg descriptor inconsistent: 25 vs 31513 free clusters\nkernel BUG at fs/ext4/ext4_jbd2.c:53!\ninvalid opcode: 0000 [#1] SMP KASAN PTI\nCPU: 0 PID: 25371 Comm: syz-executor.3 Not tainted 5.10.0+ #1\nRIP: 0010:ext4_put_nojournal fs/ext4/ext4_jbd2.c:53 [inline]\nRIP: 0010:__ext4_journal_stop+0x10e/0x110 fs/ext4/ext4_jbd2.c:116\n[...]\nCall Trace:\next4_write_inline_data_end+0x59a/0x730 fs/ext4/inline.c:795\ngeneric_perform_write+0x279/0x3c0 mm/filemap.c:3344\next4_buffered_write_iter+0x2e3/0x3d0 fs/ext4/file.c:270\next4_file_write_iter+0x30a/0x11c0 fs/ext4/file.c:520\ndo_iter_readv_writev+0x339/0x3c0 fs/read_write.c:732\ndo_iter_write+0x107/0x430 fs/read_write.c:861\nvfs_writev fs/read_write.c:934 [inline]\ndo_pwritev+0x1e5/0x380 fs/read_write.c:1031\n[...]\n==================================================================\nAbove issue may happen as follows:\ncpu1 cpu2\n__________________________|__________________________\ndo_pwritev\nvfs_writev\ndo_iter_write\next4_file_write_iter\next4_buffered_write_iter\ngeneric_perform_write\next4_da_write_begin\nvfs_fallocate\next4_fallocate\next4_convert_inline_data\next4_convert_inline_data_nolock\next4_destroy_inline_data_nolock\nclear EXT4_STATE_MAY_INLINE_DATA\next4_map_blocks\next4_ext_map_blocks\next4_mb_new_blocks\next4_mb_regular_allocator\next4_mb_good_group_nolock\next4_mb_init_group\next4_mb_init_cache\next4_mb_generate_buddy --> error\next4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\next4_restore_inline_data\nset EXT4_STATE_MAY_INLINE_DATA\next4_block_write_begin\next4_da_write_end\next4_test_inode_state(inode, EXT4_STATE_MAY_INLINE_DATA)\next4_write_inline_data_end\nhandle=NULL\next4_journal_stop(handle)\n__ext4_journal_stop\next4_put_nojournal(handle)\nref_cnt = (unsigned long)handle\nBUG_ON(ref_cnt == 0) ---> BUG_ON\nThe lock held by ext4_convert_inline_data is xattr_sem, but the lock\nheld by generic_perform_write is i_rwsem. Therefore, the two locks can\nbe concurrent.\nTo solve above issue, we add inode_lock() for ext4_convert_inline_data().\nAt the same time, move ext4_convert_inline_data() in front of\next4_punch_hole(), remove similar handling from ext4_punch_hole().", "A race condition vulnerability was found in the Linux kernel's ext4 filesystem. This flaw occurs specifically between the ext4_write and ext4_convert_inline_data functions, resulting in inconsistencies in filesystem metadata, potentially causing a kernel panic and a denial of service."], "name": "CVE-2022-49414", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49414\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49414\nhttps://lore.kernel.org/linux-cve-announce/2025022653-CVE-2022-49414-5693@gregkh/T"], "statement": "To successfully exploit this bug, the attacker needs to control the write to the filesystems. Other than having existing root privileges, this is impossible to exploit.", "threat_severity": "Moderate"}

{}