CVE-2022-50273 (GCVE-0-2022-50273)
Vulnerability from cvelistv5
Published
2025-09-15 14:21
Modified
2025-09-19 15:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to do sanity check on destination blkaddr during recovery As Wenqing Liu reported in bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216456 loop5: detected capacity change from 0 to 131072 F2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1 F2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0 F2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1 F2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0 F2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1 F2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0 F2FS-fs (loop5): Bitmap was wrongly set, blk:5634 ------------[ cut here ]------------ WARNING: CPU: 3 PID: 1013 at fs/f2fs/segment.c:2198 RIP: 0010:update_sit_entry+0xa55/0x10b0 [f2fs] Call Trace: <TASK> f2fs_do_replace_block+0xa98/0x1890 [f2fs] f2fs_replace_block+0xeb/0x180 [f2fs] recover_data+0x1a69/0x6ae0 [f2fs] f2fs_recover_fsync_data+0x120d/0x1fc0 [f2fs] f2fs_fill_super+0x4665/0x61e0 [f2fs] mount_bdev+0x2cf/0x3b0 legacy_get_tree+0xed/0x1d0 vfs_get_tree+0x81/0x2b0 path_mount+0x47e/0x19d0 do_mount+0xce/0xf0 __x64_sys_mount+0x12c/0x1a0 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd If we enable CONFIG_F2FS_CHECK_FS config, it will trigger a kernel panic instead of warning. The root cause is: in fuzzed image, SIT table is inconsistent with inode mapping table, result in triggering such warning during SIT table update. This patch introduces a new flag DATA_GENERIC_ENHANCE_UPDATE, w/ this flag, data block recovery flow can check destination blkaddr's validation in SIT table, and skip f2fs_replace_block() to avoid inconsistent status.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ef4ca04a3f9223ff8bc440041c524b2123e09a3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a4d24d746866dd45d970bd565ff3886e839366a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/68b1e607559d3dc85f94b0d738d7c4e8029b0cfa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/73fb4bd2c055a393816f078f158cdd3025006f1d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f0a47def4722c5fd8d6b9268b5ffed8a249e2db
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed854f10e6afd5cbd5c3274d4c4df4bfe0ab4362
Impacted products
Vendor Product Version
Linux Linux Version: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4
Version: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4
Version: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4
Version: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4
Version: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4
Version: 98e4da8ca301e062d79ae168c67e56f3c3de3ce4
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   Linux Linux Version: 3.8
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/f2fs/checkpoint.c",
            "fs/f2fs/f2fs.h",
            "fs/f2fs/recovery.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "product": "Linux",
          "programFiles": [
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            "fs/f2fs/f2fs.h",
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          ],
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      "cpeApplicability": [
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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\nf2fs: fix to do sanity check on destination blkaddr during recovery\n\nAs Wenqing Liu reported in bugzilla:\n\nhttps://bugzilla.kernel.org/show_bug.cgi?id=216456\n\nloop5: detected capacity change from 0 to 131072\nF2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1\nF2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0\nF2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1\nF2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0\nF2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1\nF2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0\nF2FS-fs (loop5): Bitmap was wrongly set, blk:5634\n------------[ cut here ]------------\nWARNING: CPU: 3 PID: 1013 at fs/f2fs/segment.c:2198\nRIP: 0010:update_sit_entry+0xa55/0x10b0 [f2fs]\nCall Trace:\n \u003cTASK\u003e\n f2fs_do_replace_block+0xa98/0x1890 [f2fs]\n f2fs_replace_block+0xeb/0x180 [f2fs]\n recover_data+0x1a69/0x6ae0 [f2fs]\n f2fs_recover_fsync_data+0x120d/0x1fc0 [f2fs]\n f2fs_fill_super+0x4665/0x61e0 [f2fs]\n mount_bdev+0x2cf/0x3b0\n legacy_get_tree+0xed/0x1d0\n vfs_get_tree+0x81/0x2b0\n path_mount+0x47e/0x19d0\n do_mount+0xce/0xf0\n __x64_sys_mount+0x12c/0x1a0\n do_syscall_64+0x38/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIf we enable CONFIG_F2FS_CHECK_FS config, it will trigger a kernel panic\ninstead of warning.\n\nThe root cause is: in fuzzed image, SIT table is inconsistent with inode\nmapping table, result in triggering such warning during SIT table update.\n\nThis patch introduces a new flag DATA_GENERIC_ENHANCE_UPDATE, w/ this\nflag, data block recovery flow can check destination blkaddr\u0027s validation\nin SIT table, and skip f2fs_replace_block() to avoid inconsistent status."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-09-19T15:21:23.218Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/68b1e607559d3dc85f94b0d738d7c4e8029b0cfa"
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          "url": "https://git.kernel.org/stable/c/73fb4bd2c055a393816f078f158cdd3025006f1d"
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          "url": "https://git.kernel.org/stable/c/ed854f10e6afd5cbd5c3274d4c4df4bfe0ab4362"
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        },
        {
          "url": "https://git.kernel.org/stable/c/0ef4ca04a3f9223ff8bc440041c524b2123e09a3"
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      ],
      "title": "f2fs: fix to do sanity check on destination blkaddr during recovery",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50273",
    "datePublished": "2025-09-15T14:21:09.496Z",
    "dateReserved": "2025-09-15T13:58:00.975Z",
    "dateUpdated": "2025-09-19T15:21:23.218Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-50273\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:38.207\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nf2fs: fix to do sanity check on destination blkaddr during recovery\\n\\nAs Wenqing Liu reported in bugzilla:\\n\\nhttps://bugzilla.kernel.org/show_bug.cgi?id=216456\\n\\nloop5: detected capacity change from 0 to 131072\\nF2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1\\nF2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0\\nF2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1\\nF2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0\\nF2FS-fs (loop5): recover_inode: ino = 6, name = hln, inline = 1\\nF2FS-fs (loop5): recover_data: ino = 6 (i_size: recover) err = 0\\nF2FS-fs (loop5): Bitmap was wrongly set, blk:5634\\n------------[ cut here ]------------\\nWARNING: CPU: 3 PID: 1013 at fs/f2fs/segment.c:2198\\nRIP: 0010:update_sit_entry+0xa55/0x10b0 [f2fs]\\nCall Trace:\\n \u003cTASK\u003e\\n f2fs_do_replace_block+0xa98/0x1890 [f2fs]\\n f2fs_replace_block+0xeb/0x180 [f2fs]\\n recover_data+0x1a69/0x6ae0 [f2fs]\\n f2fs_recover_fsync_data+0x120d/0x1fc0 [f2fs]\\n f2fs_fill_super+0x4665/0x61e0 [f2fs]\\n mount_bdev+0x2cf/0x3b0\\n legacy_get_tree+0xed/0x1d0\\n vfs_get_tree+0x81/0x2b0\\n path_mount+0x47e/0x19d0\\n do_mount+0xce/0xf0\\n __x64_sys_mount+0x12c/0x1a0\\n do_syscall_64+0x38/0x90\\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\\n\\nIf we enable CONFIG_F2FS_CHECK_FS config, it will trigger a kernel panic\\ninstead of warning.\\n\\nThe root cause is: in fuzzed image, SIT table is inconsistent with inode\\nmapping table, result in triggering such warning during SIT table update.\\n\\nThis patch introduces a new flag DATA_GENERIC_ENHANCE_UPDATE, w/ this\\nflag, data block recovery flow can check destination blkaddr\u0027s validation\\nin SIT table, and skip f2fs_replace_block() to avoid inconsistent status.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0ef4ca04a3f9223ff8bc440041c524b2123e09a3\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/3a4d24d746866dd45d970bd565ff3886e839366a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/68b1e607559d3dc85f94b0d738d7c4e8029b0cfa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/73fb4bd2c055a393816f078f158cdd3025006f1d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8f0a47def4722c5fd8d6b9268b5ffed8a249e2db\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed854f10e6afd5cbd5c3274d4c4df4bfe0ab4362\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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