CVE-2022-49414 (GCVE-0-2022-49414)
Vulnerability from cvelistv5
Published
2025-02-26 02:12
Modified
2025-05-04 08:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: fix race condition between ext4_write and ext4_convert_inline_data Hulk Robot reported a 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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/14602353b350950b551eccc6b46411aa3b12ffe2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18881d7e517169193d9ef6c89c7f322e3e164277Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/725e00cb7039eae291890f1bb19bc867176745f6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/91f90b571f1a23f5b8a9c2b68a9aa5d6981a3c3dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ccc6639f831bee91aa8b41c8a1cdd020ecfb9f32Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f87c7a4b084afc13190cbb263538e444cb2b392aPatch
Impacted products
Vendor Product Version
Linux Linux Version: 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf
Version: 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf
Version: 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf
Version: 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf
Version: 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf
Version: 0c8d414f163f5d35e43a4de7a6e5ee8c253fcccf
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   Linux Linux Version: 3.8
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ext4/extents.c",
            "fs/ext4/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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        {
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          "product": "Linux",
          "programFiles": [
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            "fs/ext4/inode.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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              "status": "unaffected",
              "version": "5.15.46",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.17.14",
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              "version": "5.18.3",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.207",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
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                  "versionEndExcluding": "5.10.132",
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              "negate": false,
              "operator": "OR"
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      ],
      "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  --\u003e 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)  ---\u003e 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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:37:10.389Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "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"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49414",
    "datePublished": "2025-02-26T02:12:35.083Z",
    "dateReserved": "2025-02-26T02:08:31.568Z",
    "dateUpdated": "2025-05-04T08:37:10.389Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49414\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:17.890\",\"lastModified\":\"2025-04-17T20:35:12.403\",\"vulnStatus\":\"Analyzed\",\"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  --\u003e 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)  ---\u003e 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 --\u0026gt; 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) ---\u0026gt; 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(). \"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":4.7,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"3.8\",\"versionEndExcluding\":\"5.4.207\",\"matchCriteriaId\":\"109BCDD7-33F8-40BE-B77A-E1C42BACBB08\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.132\",\"matchCriteriaId\":\"46CE9FE9-22E3-45CA-8B5F-190C2CAFC5CE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.46\",\"matchCriteriaId\":\"20D41697-0E8B-4B7D-8842-F17BF2AA21E1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.17.14\",\"matchCriteriaId\":\"15E2DD33-2255-4B76-9C15-04FF8CBAB252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.18\",\"versionEndExcluding\":\"5.18.3\",\"matchCriteriaId\":\"8E122216-2E9E-4B3E-B7B8-D575A45BA3C2\"}]}]}],\"references\":[{\"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\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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